The conditions at the US Open have made it difficult for the athletes
Defending champion Novak Djokovic will face Stan Wawrinka in the final of the US Open on Sunday after overcoming Gaels Monfils 6-3, 6-2, 3-6, 6-2.
The conditions in New York played their part as the humidity and heat affected both men on their way to the final.
Speaking to the BBC after his victory over Kei Nishikori, Wawrinka highlighted just how tough it had been to make it through all the sets in those conditions.
"It's really humid, really hot. I knew it would be tough," said Wawrinka, while Djokovic also highlighted that the humidity was a huge problem, stating "I think that's all we were thinking about and feeling."
En route to the final, Djokovic had seen two of his opponents retire and been given a walkover, but there were some worrying moments for him when he required medical attention on both his left knee and his left shoulder.
With so many players adding the Olympics to their already grueling schedule, the toll on the US Open has been obvious, and the trainer emerged on court on five separate occasions to assist Djokovic.
The difficulty and the frustrations of fighting through the injuries clearly also had an impact on him, as he decided at one stage to rip his shirt in an impression of Hulk Hogan during his wrestling days.
Whether or not those injuries will tell when the two face in the final remains to be seen, but Sunday promises an intriguing contest as both athletes fight to be as close to peak condition as possible.