Paris, May 28 -- Jakub Mensik said his body "just turned off" as he collapsed on court following a gruelling second-round win in sweltering conditions at the French Open.

Temperatures reached the mid-30s in Celsius as the heatwave in France continued.

Mensik, 20, was overcome with emotion and cramp as he fell to the floor after beating Argentina's Mariano Navone 6-3 2-6 6-4 1-6 7-6 (13-11) in four hours and 41 minutes, according to BBC Sport.

The Czech - whose flashes of brilliance in his young career have been beset by injury - was struggling to move and needed eight match points to close out victory.

After he fell the floor, opponent Navone crossed the net to congratulate him and also help him up, but Mensik was unable to move.

The 2...