Jannik Sinner revealed he “hit the wall” but insisted heat did not play a factor after the French Open favourite dramatically blew a seemingly unassailable lead to crash out in five sets and leave the tournament wide open.
The world No 1 had won his last 30 matches in a row and led Argentina’s Juan Manuel Cerundolo 6-3 6-2 5-1, appearing to be on the brink of the third round.