Daniil Medvedev reached the US Open semi-finals by beating Andrey Rublev in hot and humid conditions that he said would cause a player to “die”.
The third seed appeared to struggle with his breathing but beat his fellow Russian 6-4 6-3 6-4 on Wednesday.
“One player is going to die and you are going to see,” he said into a camera during the match in New York.
Medvedev faces Carlos Alcaraz next after the defending champion beat Alexander Zverev 6-3 6-2 6-4.
Spain’s Alcaraz, 20, saw off five break points on his way to an efficient victory over the German 12th seed.
Both men’s semi-finals will take place at Flushing Meadows on Friday.
Serb second seed Novak Djokovic, bidding for a record-equalling 24th major title, will face young American Ben Shelton in the first match at 15:00 local time (20:00 BST).
‘It was brutal’
With a heatwave sweeping over New York, the match was played under a partially closed roof on the hottest day of the tournament so far, with temperatures rising to about 35C on Wednesday.
Both players looked physically and emotionally drained as Medvedev – who won the 2021 US Open – eventually wrapped up the match after two hours and 48 minutes before comparing the “brutal” conditions with the weather he experienced during the Tokyo Olympics in 2021.
“The only good thing I see in these conditions is that both [players] suffer. It’s tough for both of us,” he said.
Medvedev and Rublev each took lengthy bathroom breaks in between sets for a moment of respite from the heat and to change their sweat-drenched clothes.
The pair also hosed themselves down with cold water, sat under ice towels and made the most of the air conditioning units at their seats.
“At the end of the first set I couldn’t see the ball any more. I played with sensations – try to go for it, try to run, try to catch the balls – and he did the same sometimes,” Medvedev added.
“A few moments in the third set he was up a break. I couldn’t wait to go to the cold shower, but the thing about that is when you come out either you can’t move because your body blocks or you feel better.”