As was the case earlier in the morning in F2, the drivers entered in the Porsche Mobil 1 Supercup, the only one-make category of the weekend, saw their race interrupted just a few seconds after the start. An impressive pile-up, caused by the collision between Marvin Klein (Lechner Racing) and Keagan Masters (Ombra Racing), required the intervention of the stewards and circuit technicians.

This third race of the day, the last before the Formula 1 TAG Heuer Grand Prix de Monaco, should have lasted 17 laps. However, following a twenty-minute neutralisation, it was cut short to 4 laps only.

This was due to another pile-up, as in the main F2 race, caused by the accident between Marvin Klein and Keagan Masters just after the Sainte Dévote bend. In the process, the two drivers caused two other collateral victims: Dutch drivers Wouter Boerekamps (GP Elite) and Jaap van Lagen (Proton Huber Competition).

After an interruption of almost half an hour, allowing the track marshals to do their job quickly and the technicians from the Monegasque company Polymétal to repair the rail damaged by the impact, the German cars took to the track behind the safety car for a flying start.

They had just 3 laps left in the race, before the chequered flag was lowered. Dutch poleman Robert de Haan (BWT Lechner Racing) won ahead of Germany’s Theo Oeverhaus (Proton Huber Competition) and young Frenchman Alessandro Ghiretti (Schumacher CLRT). ‘A victory is a victory’, said the winner, very happy, on his onboard radio.

🏆 VICTORY FOR ROBERT DE HAAN IN PORSCHE MOBIL 1 SUPERCUP RACE 🏆

Theo Oeverhaus finishes 2nd and Alessandro Ghiretti completes podium in 3rd 🙌

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🏆 VICTOIRE POUR ROBERT DE HAAN EN PORSCHE MOBIL 1 SUPERCUP 🏆

Theo Oeverhaus termine en 2e position alors que Alessandro… pic.twitter.com/VZFcEUjsu6

— Automobile Club de Monaco (@ACM_Media) May 25, 2025