“The conditions were really tough,” Medvedev said of the humid heat that enveloped New York on Monday night. “At one point, I thought I was not going to be able to play anymore, but then I noticed that he too was starting to move less well. So I said to myself that I had to fight, ”said Medvedev who used an inhaler from the first set.

“I then started to serve better and that was the key,” he added, adding that he also felt “better and better” physically as the match progressed. Beaten in the round of 16 last year, he will try to climb back into the last four by facing Rublev, his daughter’s godfather. “It will be intense, very hard physically, he predicted. Usually, we play at a high level against each other.