Suffering diarrhoea ahead of the race, and his drink system failing on the opening lap, leaves Sergio Perez facing the toughest afternoon of his career. read more »

Sergio Perez labelled the United States Grand Prix his "toughest ever" after overcoming a drinks bottle issue and a bout of diarrhoea. read more »

Red Bull's Sergio Perez has revealed he struggled physically for much of the United States Grand Prix after falling ill on Sunday morning. Prior to the race, Perez was hit... read more »