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George Russell has revealed that he was suffering from chest and back pains as a result of his Mercedes car bouncing violently on the straights during the Emilia Romagna Grand Prix. The 24-year-old managed to secure an impressive fourth-placed finish after initially qualifying outside the top 10 but was again forced to cope with the porpoising issue that has plagued Mercedes all year throughout the 63-lap event at Imola.

Russell's car was often spotted bouncing up and down towards the end of the long straights, with the issue also helping to prevent Lewis Hamilton from overtaking Pierre Gasly for 12th place during the closing stages of the contest. The former has since raised questions over the knock-on effects of porpoising by admitting that it took a serious physical toll on him over the course of the day's running.

"When the car is in the right window and the tyres are in the right window, the car - except