Stewards clear Pérez over Stroll block
7 October 2017 – Stewards at the Japanese Grand Prix have taken no further action against Sergio Pérez, after he was alleged to have impeded Lance Stroll during qualifying for the Japanese Grand Prix.
Williams rookie Stroll expressed his frustration after he felt he was held up through the chicane by the Force India driver and held only 18th spot in Q1.
Romain Grosjean's subsequent crash prevented drivers from improving during the closing stages, denying Stroll the chance to escape the drop zone.
Stewards investigated the incident but opted to take no further action against Pérez, explaining that the "accordion effect" meant Pérez was left with little alternative.
"Throughout qualifying cars were slowing considerably entering Turn 16 in order to achieve a gap to the cars in front of them," read the stewards' report.
"This created an accordion effect when several cars were doing this in succession. This contributed to the incident between Pérez and Stroll.
"Pérez was setting up for a fast lap behind several cars ahead of him.
"Pierre Gasly was behind Pérez and approaching Turn 16 passed Pérez, which he was entitled to do so.
"The interaction with Gasly caused Pérez to be at the apex of Turn 17 at the moment that Lance Stroll, who was on a fast lap, also reached Turn 17.
"After Gasly passed Turn 17, he was told by his team to pit.
"Article 31.6 prohibits 'unnecessarily' impeding. Both drivers agreed in the hearing that had there not been the interaction of the other cars, Pérez would not have been in the position he was and that the situation changed significantly and unavoidably when Gasly passed Pérez.
"Therefore the stewards concluded that while Pérez certainly impeded Stroll he did not unnecessarily impede Stroll and therefore take no further action."