Scorching temperatures on the US Open have sparked a shock courtside outburst from Russian champion Daniil Medvedev.

The world No 3 was battling it out towards good buddy Andrey Rublev within the quarter-finals when he approached the digital camera to warn "one of us is going to die".

"You cannot imagine. One player is going to die and they are going to see," Medvedev stated, wanting straight into the lens.

Temperatures soared to 33C (91F) on Wednesday because the Russian stars thrashed it out by means of three agonising units.

High humidity pushed the gamers even additional, with Medvedev complaining after the match that there have been occasions he struggled to see the ball.

"It was brutal. The only good thing I see in these conditions is both suffer, so it's tough for both of us," stated the 2021 US Open champion.

"At the top of the primary set, I sort of could not see the ball anymore! I performed with sensations and tried to go for it, tried to run and tried to catch the balls. He did the identical typically.

"Brutal conditions and super tough to win."

Despite the roof on Arthur Ashe Stadium being half-closed, Medvedev wanted the coach twice and in addition to the usage of an inhaler to maintain going.

Sky Sports pundits Tim Henman and Martina Navratilova stated it was clear the gamers had been struggling.

"To watch that match with Rublev and Medvedev was brutal. You could see they were fighting so hard and they had so little energy left in the tank, it was almost if they were playing on instinct," stated Henman.

Martina Navratilova added: "I was cooking in the shade and was like these guys are putting it out there. The only thing you can think of is how you can stay cool. It's really hard to have that tennis brain going."

Medvedev will go on to the semi-finals of the US match after profitable the match 6-4 6-3 6-4.