Heart of Racing steps up to the Michelin Pilot Challenge Series for 2026
More known within the GT4 America Series sees the teams #26 AMR Vantage GT4 of both Hannah Grisham and Hannah Greenemeier move up to the GS class of the IMSA sanctioned support series for the first time after spending the last three seasons (two seasons together) learning their craft.
This news is very timely seeing the departure from the AMR family of the Team TGM outfit after their winter move to the Ford Mustang package despite recouping their Bronze Cup Championship win for their #64 crew.
Today’s news from the Heart of Racing team sees the two Hannah’s joined by former ADAC GT4 Germany Champion Mike David Ortamann for those two longer four-hour races having impressed so much in his debut American season last year with the JMF Motorsport team.
“I’m incredibly grateful to The Heart of Racing for this opportunity,” said Grisham. “Racing a full season in the 2026 IMSA Michelin Pilot Challenge is a dream. I’m excited to kick off the season at Daytona and take on some iconic tracks that are new for me, like Watkins Glen and Canadian Tire Motorsports Park. I’m really looking forward to continuing to share the car with Hannah Greenemeier. The longer race format is a bit different than what we are used to, but I think it will play to our strengths. I can’t wait for what’s ahead!”
“I’m incredibly grateful to The Heart of Racing for this opportunity,” said Grisham. “Racing a full season in the 2026 IMSA Michelin Pilot Challenge is a dream. I’m excited to kick off the season at Daytona and take on some iconic tracks that are new for me, like Watkins Glen and Canadian Tire Motorsports Park. I’m really looking forward to continuing to share the car with Hannah Greenemeier. The longer race format is a bit different than what we are used to, but I think it will play to our strengths. I can’t wait for what’s ahead!”
“I’m beyond excited to be back with The Heart of Racing for another season, and to be competing in IMSA Michelin Pilot Challenge, I’ve watched the series for many years, and it has a lot of talent in it. Being in the IMSA paddock is truly a privilege. It’s great to be back with Hannah for another year, and to have Mike Ortmann with us in Daytona is something I’m incredibly excited for. I’m ready for our first race in Daytona in January; it’s a track I have never driven on, but I know that we will get up to speed quickly. I want to say a massive thank you to The Heart of Racing for this opportunity, Gabe Newell and Yahn Bernier. Let’s go racing!” added Greenemeier.
The Michelin Pilot Challenge season kicks off at Daytona in January.
Photo credits – Team / Series / social media
Thursday, December 11, 2025 |
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Class podiums the spoils of class efforts for the AMR entries in GT4 America opener from Sonoma
Within that midst were this time five Aston Martin Racing Vantage GT4 powered crews – two from the new to AMR JMF Motorsport team and a returning entry apiece from the Heart of Racing, Skip Barber Racing and Archangel Motorsport teams.
Testing at the circuit prior to the race weekend had fortunately included some very wet weather testing and that knowledge and understanding would prove important over the two, hour long races as race one would be under clear blue skies and sunshine (although chilly) with race two in what was left of another overnight deluge.
With the grid set for race one earlier on Saturday, it was the #3 and #4 JMF Astons of Jesse Webb and Braydon Arthur who stole the march upon the more experienced AMR crews as they both started from the third row as the starting line was delayed due to a stranded car upon the grid. Inevitably with so many cars circulating around sometimes a very tight track profile, there was contact in the early stages between three cars that brought out the Safety Car for the first time.
With the grid set for race one earlier on Saturday, it was the #3 and #4 JMF Astons of Jesse Webb and Braydon Arthur who stole the march upon the more experienced AMR crews as they both started from the third row as the starting line was delayed due to a stranded car upon the grid. Inevitably with so many cars circulating around sometimes a very tight track profile, there was contact in the early stages between three cars that brought out the Safety Car for the first time.
Getting back to green however, unseen contact for the #4 JMF car saw Webb stranded trackside as five to six other cars met with a crashing end to their race through the tight turn one to two sequence – another Safety Car.
That clean-up operation took until the halfway stage, so Race Control elected to allow all cars to pit under caution before getting back to green again with twenty minutes remaining. By then Hannah Grisham was up to P3 in Silver after a steady, accident avoiding stint from Hannah Greenemeier within their #26 Silver entry whilst Michael Garcia was up to second in Am within his #007 Am entered Skip Barber Racing car.
All was looking good for the #007 car until just two minutes from the end when technical issues within the red Aston Martin surrendered a certain class podium in Am but at least the #4 JMF Motorsport Aston Martin of Arthur and Mike David Ortmann hung on for a P3 finish in silver with the #26 HoRT crew just behind. The #15 Archangel AMR of Adrian Comstock and Thomas Merril finished their first race together P9 in Pro-Am.
Sundays second race was a wholly different affair as the track was still being doused by heavy rainfall that had been over the circuit all night. Again, Qualifying had already been determined earlier on Saturday but again, it was the two JMF AMR’s leading the way on the grid in P4 and P5.
This time a single file start because of the track conditions with an early spinner into turn 2 narrowly avoided by both JMF cars as the pack roared through with spray making for track navigation almost guesswork for the drivers.
Despite the conditions, the race stayed green as Grisham found herself fighting for track position with the #007 of Alex Garcia and the #15 Archangel car finally getting inside the top ten with Comstock aboard.
Just before the pit window, a BMW was forced into the concrete wall and with that stopping on the track infield a Safety Car intervention was inevitable. Judging that rightly or wrongly, the #26 Heart of Racing car was already in pit lane as the Safety Car came out and the pits were closed – missing what precisely happened next, the car was either forced to stop at pit out for the Safety Car train to pass or their stop was a particularly long one as once all the other cars had pitted, the #26 was waved around to the complete rear of the pack!
After that, track conditions began to improve as the spray volume reduced and a distinct change in colour appeared on the preferred line on track with now Greenemeir on something of a charge from the rear of the pack for the twenty odd minutes that she had left. The #007 Skip Barber car of Garcia was a distant second to its Am class leader, but that car had already received a thirty second post-race penalty for cutting a corner earlier in the race in accident avoidance and the margin to one another was there or there abouts!
With just minutes to run, the #15 Archangel AMR disappeared from the timing screen (due to issues unknown) and an Mclaren off into the tyre wall and a puncture for another would all help the #26 and #007 in their final efforts.
Eventually the chequered flag dropped, and it was the turn of the #3 JMF team to take to the podium with their P3 silver result, the #4 car just behind in P5 and with the #26 HoRT car up to P12 overall/P7 in class for their efforts. The query still resides around the finishing position of the #007 SBR car as on track, they were listed as still finishing two seconds behind the leader after their post-race penalty time deduction but social media posts from the series later said that the #007 had claimed the Am class win??
Next stop anyway for these guys will be from the Circuit of the Americas in a months’ time.
Photo credits – Teams / Series / social media
Monday, March 31, 2025 |
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Another new face for 2025
Coming in just that little too late for us to post out before the New Year celebrations yesterday saw another team join the growing list of Aston Martin Racing powered teams grow by another one in time for the 2025 season.
This time Stateside of the Atlantic, yesterday’s news saw the Canadian based JMF Motorsport based team commit to a two AMR Vantage GT4 participation within the SRO GT4 America Series for this forthcoming 2025 season.
Previously running the similar performing Mercedes AMG GT4 platform, team CEO Danny Kok was noted as saying “The Aston Martin Vantage AMR GT4 EVO is a proven contender. Combined with our new driver roster, our goal is to win the silver class championship title in 2025!”
Running both cars within the ultra-competitive silver class of the series, Jesse Webb and will be joined by Jonathon Neudorf in one car whilst Braydon Arthur will be joined by former ADAC GT4 Germany Champion and now GT World Challenge Europe Gt3 racer Mike David Ortmann.
Already in possession of at least one example of the new 2024 AMR Vantage GT4 Evo, their season will kick off again in Sonoma, California in just under three months’ time in late March.
Photo credits - Team
Wednesday, January 01, 2025 |
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ADAC GT Masters and GT4 Germany round off the year at Hockenheim
The final round of the ADAC GT Masters Series finished this weekend at the Hockenheimring certainly at lot better than the season had started for them for at least one half of the Walkenhorst Motorsport entry.
Rounding off this weekend sixth and final double header of the season it was again the pair of Aston Martin Racing Vantage GT3’s from the Walkenhorst stable who represented the British marque within the seventeen strong entry.
Mike David Ortmann and Denis Bulatov again paired within the #34 car whilst Chandler Hull and Nico Hantke again paired the team’s #35 Pro-Am entry, and it was that pairing who rounded off this final race weekend best with a final pair of P2 class finishes at the end of each of Saturday and Sunday’s hour-long races.
Unfortunately, too little too late for this pairing as both crews finished the year within the mid table of the overall results.
Unfortunately, too little too late for this pairing as both crews finished the year within the mid table of the overall results.
It was something of a similar thread from within the supporting ADAC GT4 Masters Series which also concluded this weekend but with another AMR Vantage GT4 pairing to add to the season long #55 Zakspeed with ESM Motorsport entry.
The other half of the then reigning ADAC GT4 Germany Championship crew in Hugo Sasse (other half was Mike David-Ortmann) paired up again with his former GT4 European Series co-driver in Raphael Rennhofer and that caused something of a stir between the outgoing 17A variant of the Vantage GT4 of the #1 Prosport Racing entry and the new 2024 #55 Zakspeed entry.
Whilst the #55 crew have apparently been ‘plagued’ with technical issues (particularly with braking) within their new car, the #1 crew were able to arrive and drive to two front row starts over this weekend (Pole position on Sunday) and convert both in podium finishes whilst the Zakspeed crew could offer no higher than P8 over the weekend.
Neither sets of results impacting much upon the remaining championship battles as Zakspeed drivers Philipp Gogollok and Jan Marschalkowski finished the year tenth overall and ninth within the Team’s Championship.
Photo credits – Teams / Series / social media
Sunday, October 20, 2024 |
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Both the ADAC GT Masters and GT4 Germany Series race out their 2024 seasons this weekend at Hockenheim
With the Walkenhorst Motorsport team entering a pair of their new 2024 AMR Vantage GT3’s into the series for the first time since Prosport Racings 2019 ill-fated effort with the then 16A variant, hopes were high of something good as last season’s GT4 Germany Champion Mike David Ortmann paired up with Denis Bulatov within the #34 car whilst American racer Chandler Hull paired up with another ex GT4 Germany racer in Nico Hantke.
Starting their season at Oschersleben way back in late April, there were two lowly finishes apiece at the end of that weekend before the #34 crew found both consistency and the podium next time out in Zandvoort before it became role reversals with their sister #35 car (with a double podium) at the Nurburgring.
It was then a quick trip across the Belgian border to Spa Francorchamps where the two Walkenhorst cars were joined by two from the Prosport Racing team (as a one-off event only) where both the #34 and #35 cars again visited the podium. Last time out at the Red bull Ring however at the end of September saw both cars again relegated to the rear of the pack with a P7 finish the best that either could offer by the end of that race weekend.
It was then a quick trip across the Belgian border to Spa Francorchamps where the two Walkenhorst cars were joined by two from the Prosport Racing team (as a one-off event only) where both the #34 and #35 cars again visited the podium. Last time out at the Red bull Ring however at the end of September saw both cars again relegated to the rear of the pack with a P7 finish the best that either could offer by the end of that race weekend.
They have now reached the end of the season with a final double header event at the former home of the German Grand Prix with nothing more than pride and their sponsors to race for.
Joining this series at the circuit will again be the ADAC GT4 Germany Series where we have seen only one Aston Martin Racing Vantage GT4 entry from the literal handful that competed within that series last season.
Like their AMR Vantage GT3 powered peers, the #55 Zakspeed with Eastside Motorsport crew of Philipp Gogollok and Jan Marschalkowski have endured a similar season of torment with their new car which apparently had a serious problem with braking through the season.
A constant stream of either a lowly finish or even a DNF haunted the team until the Red Bull Ring last time out finally saw the young pairing take both race pole position in race one (before something broke on the car on the opening lap) before taking the race win at the end of the second race.
The team arrive at the Hockenheimring with absolutely nothing to lose and hopefully they can build upon what was finally seen in Austria, but they won’t be alone this time, as the other half of Prosport Racing’s ADAC GT4 Germany championship winning crew of Hugo Sasse will be racing alongside his 2024 GT4 European co-driver in Raphael Rennhofer at this weekend’s event having skipped the last round of that season earlier in September.
Photo credits – Team / Series / social media
Tuesday, October 15, 2024 |
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Three Aston Martins listed with the ADAC GT Masters and GT4 Germany Series visit to Austria this weekend
Back to ‘normal’ in terms of car head count this time around as the two Prosport Racing Aston Martin Racing Vantage GT3’s that guested at the last round at Spa Francorchamps are no longer involved leaving just the two full season Walkenhorst Motorsport Vantage GT3’s and solo Zakspeed with ESM Vantage GT4 to work their magic this weekend.
At Spa last time out at the end of August saw both Walkenhorst cars of #34 Mike David Ortmann and Dennis Bulatov score a third placed overall finishing position in race one whilst their #35 stable mates of Nico Hantke and Chandler Hull score another Pro-Am class win for the efforts whilst things did go a little wrong for that crew in race 2 of the weekend after Hantke was effectively taken out of the race on the opening lap after contact with the pole setting car into La Source.
Not knowing where the AMR Vantage GT3 BoP sits within the series (after multiple mid event changes so far this season, both the #34 and #35 Walkenhorst cars enter alongside eighteen other GT3 crews for another two one-hour races event.
Championship wise, both cars presently sit way off the pace after something of a disastrous start to the season – again, mainly BoP derived with success at Spa coming too little, too late in the year to effect too much.
They will be joined by the #55 Zakspeed with Eastside Motorsport AMR Vantage GT4 of Phillipp Gogollok and Jan Marschalkowski who have endured as similar seasonal experience within the GT4 Germany Series to that of the AMR GT3 peers in GT Masters.
Their last outing was around the wet of the Nurburgring in mid-August where the one-off qualifying pace of their new Vantage GT4 Evo was good (claiming both a P2 and P4 starts for the two-hour long races) but again, only being able to deliver two disappointing P8 and P5 finishes at the end.
For a team and crew who certainly have the ability – they find themselves down in a very disappointing P12 within their own Drivers Championship table with just four races remaining.
Photo credits – Teams / Series / social media
Thursday, September 26, 2024 |
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Walkenhorst not so fortunate with the ADAC GT Masters Sprint race from Spa yesterday
Having enjoyed an overnight Balance of Performance weight reduction overnight and having qualified their two cars onto the front two rows of the eighteen-car strong grid, it was trouble again at the opening corner the hurt the pace setting #35 Pro-Am car of Nico Hantke and Chandler Hull.
Having qualified in second, Hantke aimed for the wider line going into La Source compared to that of the pole setting Ferrari but contact from behind with the pole car spun them around and (unfortunately) directly into the path of the #35 car.
Avoiding the trouble, however, was the #34 Walkenhorst car of Mike David Ortmann and Denis Bulatov who assumed the race lead going down the hill into Eau Rouge for the first time and whilst Hantke did get going again, an apparent tyre/wheel/hub failure eventually sent their effort spinning off into the tyre wall for an immediate DNF and Safety Car.
The #34 car was then under investigation for a false start earlier (and awaited his fate with the penalty box) whilst the ten-minute clean-up process was underway whilst the two Prosport Racing AMR Vantage GT3 entries of Jamie Day and Hugo Sasse consolidated an improved starting position of P12 and P13 respectively.
Sure enough, that penalty was confirmed for Ortmann breaking ranks before the start line which would drop his car down to eighth was served just ahead of the opening on the compulsory ten-minute pit stop window.
Sure enough, that penalty was confirmed for Ortmann breaking ranks before the start line which would drop his car down to eighth was served just ahead of the opening on the compulsory ten-minute pit stop window.
Driver changes underway and Raphael Rennhofer quickly came to the attention of Race Control as his #27 swap from Sasse was deemed to be under the minimum delta time earning himself a visit to the penalty box which would eventually place them well behind their sister #37 Prosport Racing car of Hendrik Still.
A near miss for two cars tangling at the bottom of Eau Rouge saw them avoid both the barriers and other cars to help raise the #34 car up another couple of position going into the final ten minutes and after some furious fighting from Bulatov, they were soon up to P6 overall – P5 in class.
Despite taking a double podium finish after the earlier endurance race on Saturday, the full season Walkenhorst crews had to make do with a P6 finish on track – elevated to P5 once the race winning #1 Mercedes crew had been demoted down to sixth in lieu of a drive through penalty.
The two Prosport Racing entries would end up being consistent in form if nothing else as the near all GT3 rookie crews took a P11 finish for Day and Still whilst Rennhofer and Sasse would lament their earlier pit stop error to add a P13 finish to their P9 endurance round finish earlier. Either way, it was all great experience for them and the team as they made their way back into the series for the first time since 2019.
The series now moves onto its next round from the Red Bull Ring in late September.
Photo credits – Teams / Series / social media
Monday, September 02, 2024 |
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Double success again for Walkenhorst in ADAC GT Masters visit to Spa
Having contested with earlier rain during yesterday’s test day, the sun was there to stay throughout the earlier part of Saturday to allow Q1 and the extended eighty-minute endurance race to be completed within the comforts of a warm, dry circuit.
Having suffered a delayed start to race one thanks to a clean-up operation from an earlier race, the #34 Walkenhorst car of Denis Bulatov and Mike David Ortmann would heading the AMR quartet with the #27 Prosport Racing AMR of Raphael Rennhofer/Hugo Sasse, the #35 Walkenhorst car of Chandler Hull/Nico Hantke and the #37 Prosport Racing car of Hendrik Still/ Jamie Day starting line astern from P13/P14 and P15 of the eighteen strong grid.
Almost a clean opening lap for the race but for a small mistake from Bulatov that would see car run wide and through the gravel before recovering on track albeit three places lower down the order whilst the other three Aston’s looked keen to compare the two differing performance iterations of the two versions of the Vantage GT3 on offer this weekend.
An early Safety Car to recover a stranded car on track broke the rhythm just fifteen minutes in and indeed delayed the opening of the first pit stop window within which the teams could choose either the shorter or the longer mandatory time this time around. Going back to green with just under an hour remaining, the #37 Prosport car of Still was the first AMR to bail for pit lane whilst the #34 car would become the last of the four to pit.
First stops all over and Sasse would find himself the highest AMR up the order having chosen the shorter mandatory stop time whilst the #34 selected the longer time as Sasse moved up to P5 (at best) whilst his former ADAC GT4 Germany teammate (Ortmann) dropped to P11 on track at this stage of the race but by the end of these guys stints, the positions on track had all be reversed.
The other two Astons was also busy squabbling it out on track as Day also drove his first GT3 racing laps against a more GT3 experienced driver (Hantke) in the #35 Walkenhorst car.
Due to the earlier delay of the first ten-minute pit stop window, the second was also delayed to take place just twenty minutes before the end with the original race starting drivers due to get back in having completed the required stop time not undertaken in their first.
Quickly, Race Control investigated the #34 car of infringing this time requirement and awarded Bulatov (now back in the car) a visit to the penalty box section of the track for their efforts. Their #35 stablemates Pro-Am entry had also moved up the order as Hull took back control of the car from P7 overall (P3 in class) for what appeared to be a possible double podium for the team again.
Whilst the #34 would hold on to fend off all the attention of the chasing #4 Porsche, a problem for that car on the final lap saw the Porsche stop and the #35 car move up to fifth overall and take another class win to join the #34 crew upon the podium after they finished P3 overall. The #27 Prosport car would finish P12 overall with the #37 P14 overall – both stellar performances from two mainly GT3 inexperienced crews running togther for the first time.
The crews and grid go again tomorrow with Q2 ahead of a shorter forty minute – pit stop punctuated spring race.
Photo credits – Team / Series / social media
Saturday, August 31, 2024 |
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Four Aston Martin Vantage GT3s confirmed for ADAC GT Masters return to Spa Francorchamps
Competing at will be their fourth round of the season in Belgium, the two full season entries from the Walkenhorst Motorsport team will indeed by joined by a further two cars from the Prosport (albeit in differing iterations of the Vantage GT3) for their own advancing young driver line up.
Within what is still a lowly eighteen strong entry list, the #34 Walkenhorst entry of Mike David Ortmann and Denis Bulatov will again be joined by their #35 stablemate entry of Nico Hantke and Chandler Hull whilst GT3 novices Jamie Day and Hendrik Still will drive the #37 Prosport entry alongside the slightly more GT3 experienced duo of Hugo Sasse and Raphael Rennhofer aboard the #27 Prosport entry.
First time back in Belgium after a nine-year sabbatical, this event again runs the 80-minute endurance race on Saturday (including its two mandatory stops) before a concluding 40-minute sprint race on Sunday like they did last time out at the Nurburgring in mid- July.
Results within the series have not been that great for the two full season Walkenhorst entries with the leading Aston driver (Ortmann/Bulatov) way down in seventh place within the overall table. Hull and Hantke are further back still but importantly for them, they enjoyed a double class podium weekend with two P2 Pro-Am class finishes at the Nurburgring.
For the Prosport Racing team, this weekend will all be about experience as all four of their drivers have little to no GT3 racing experience, certainly not within this series nor at this circuit so any results from them would be outstanding.
We were (for a time) if two more GT4 racers would be stepping up to the series within a Walkenhorst supported car as two tested with the team earlier this week before not exactly declaring what will become of that test other than a ‘wait and see!’
Photo credits – Teams / series / social media
Thursday, August 29, 2024 |
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Double podium in class for #35 Walkenhorst AMR in GT Masters
Competing at the Nurburgring this weekend over what was a 250th race anniversary event for the series saw both the #34 car of Denis Bulatov and Mike David Ortmann compete within the overall Pro class as well as the #35 Pro-Am classed car of Hull and Hantke amongst the field of nineteen cars for this third round of the season.
Running a longer race format race of eighty minutes on Saturday in celebration to the series anniversary, the race suffered a delayed start as a guesting entry collided with the pit lane barrier on the warmup lap before finally getting underway behind perhaps the biggest pace vehicle ever seen within a GT class race!
Whilst running as high as fifth overall, the #34 would finally finish P9 overall (P4 in class) at this double pit stop punctuated race but the #35 would finish at the season best so far in P12 overall – that was P2 within Pro-Am for their first podium finish of the season.
Sundays second race of the weekend was a shorter affair being only forty minutes in length (but the race distance of the weekend was still the usual two hours) as they got underway under bright summer sunshine again.
Still a pit stop punctuated race, Bulatov was unable to wrestle his Aston Martin up higher than P8 whilst Hull again adopted the cautious route in the opening laps towards the rear to move up to P17.
At the end, the #34 again finished P9 overall (P8 in class) whilst the #35 car improved to P11 overall earning themselves a repeat visit to the Pro-Am podium having scooped their second P2 finish of the weekend.
Their next race weekend will be from Spa Francorchamps at the end of August.
Photo credits – Teams / Series / social media
Sunday, July 14, 2024 |
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Walkenhorst back on ADAC GT Masters duties - but with a twist this weekend
Two of Walkenhorst Motorsport’s Aston Martin Racing Vantage GT3’s will be back in action again this weekend around the Nurburgring as the ADAC GT Masters Series runs an anniversary special to mark its 250th race.
Usually running a two one-hour race format over the Saturday and Sunday of the race weekend, the series have tweaked the goal posts just a little this time around to see an eighty-minute race on Saturday before a forty-minute race on Sunday – so still the same track time as always!!
Race one will demand two driver changes, tyre change and refuel during one of them within the permitted timeframe whilst race two will require just one.
Both the #35 car of Chandler Hull and Nico Hantke as well as the #34 car of Denis Bulatov and Mike David Ortmann will be in attendance within (still) an undisclosed grid as the #34 looks to capitalise upon gains made during the last round from Zandvoort and for the #35 just to make gains after having endured something of a trying season after the previous two rounds so far.
Results so far leave the #34 crew down in seventh within the overall drivers Championship table whilst the #35 crew are in thirteenth.
Track action started today with testing ahead of Free Practice 1 and 2 tomorrow before Q1 and race 1 on Saturday with the same again on Sunday for race 2.
Photo credits – Team / Series
Thursday, July 11, 2024 |
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