(AP Photo/Patrick Semansky)

TOKYO (AP) Bent over in exhaustion before serving. Resting on his racket between points. Grasping for a rubber tube blowing cool air next to his seat on changeovers. Two medical timeouts and one visit from a trainer.

Daniil Medvedev was struggling so much with the suffocating heat and humidity at the Ariake Tennis Park on Wednesday that at one point the chair umpire, Carlos Ramos, asked him if he could continue playing.

"I can finish the match but I can die," Medvedev replied. "If I die, are you going to be responsible?"

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