As yesterday's third round matches got off to a start, many are starting to feel the pressure of not only their opponents, but the sweltering heat as well.
With temperatures during the day hitting as high as 40 degrees, players are starting to feel the heat in more than one way.
With the likes of Gael Monfils, who, following his defeat to Novak Djokovic, said he felt like he was 'almost dying', while Rafael Nadal admitted the conditions were 'dangerous'.
But, while some players hit lucky with the odd night match here and there, one player seems to be getting an 'unfair advantage' throughout.
Roger Federer has played all of his opening three rounds in the night sessions, where temperatures are much cooler than that of the day sessions.
While this seems to have angered some players and fans, it's also got the attention of tennis legend Pat Cash, who says it was unfair to the other players, ahead of Federer's clash with Richard Gasquet.
The Australian told Eurosport: "It has caused a bit of controversy actually. It's one of those tricky things.
"Does Federer get an unfair advantage? Yeah, he probably does, but does he deserve the unfair advantage? Yeah he probably does.
"It has been a bonus to stay out those two stinking hot days.
"He plays well in the cooler conditions certainly against a guy like Gasquet who has got heavy top spin.
"In the hot bouncy conditions, he could really trouble Roger by getting the ball up high to his backhand.
"He hits the ball hard and deep but in conditions like this it's just made for Roger Federer.
"Occasionally you get a sticky match, one of those crazy matches where an underdog comes through and plays really well.
"We see that often in tournaments and I'm sure Federer will be on edge because Gasquet can certainly play."
Federer and Gasquet faced each other in the third round of the competition earlier this morning (Saturday January 20) and it was the Swiss who came out on top, beating the Frenchman 6-2, 7-5, 6-4.
That takes the pair to a total of 19 matches facing one another, Federer winning 17 and Gasquet just 2.
Gasquet last won in 2011 and Cash admitted before the match: "He's got his work cut out. I think Federer is a better player in the last couple of years, especially on the hardcourt. He's improving which is hard to believe."
This weekend's result means that Federer is now through to the final 16 of the tournament and that the World No. 2 has made it without dropping a single set.
Federer will now face Marton Fucsovics in the fourth round, after his win over Nicolas Kicker.
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