Novak Djokovic has urged Australian Open officials to take greater consideration of player welfare as temperatures reached over 100 degrees on Rod Laver Arena on Thursday.
It was an impressive revelation that spoke to Monfils' humility, bravery and class. How many other professional sportsmen or women would openly admit giving up during one of the four biggest tournaments of the year is OK? But she later said it was "dangerous" to play in that kind of heat.
Melbourne Park is renowned for its unforgiving conditions in extreme heat and despite the conditions it has not activated the extreme heat policy.
Every year tennis players brace themselves for potentially oppressive weather at the Australian Open - but that doesn't make it any easier to deal with when the intense heat does arrive.
If I can help him, I'll do that. "That's really it", Muguruza told reporters.
A visibly drained Monfils had earlier looked close to retiring after taking the first set over a slow-starting Djokovic.
The torturous conditions were having a serious effect on both players, but particularly Monfils.
Two-time grand slam champion Garbine Muguruza and Johanna Konta were upset in the open women's draw but neither blamed the conditions, while Maria Sharapova set up a blockbuster clash with resurgent 2016 champion Angelique Kerber.
"He wasn't at his best at the end of the second and entire third set".
Gael Monfils struggles in the Melbourne heat.
Sixth-seeded Karolina Pliskova, No. 8 Caroline Garcia and No. 26 Agnieszka Radwanska also advanced.
Muguruza saved a first match point in the second set to get back to 5-4 but Hsieh made no mistake in the next game. "It was a big challenge for both of us to be on the court, to be able to finish the match". Clearly, the 2014 champion was too ambitious. "To be that far already, it's more than what we could have expected".
"It's never easy to play against top 20 girls". When ticket holders abandoned their primo midcourt, lower-level seats at Rod Laver Arena, the Western Australian left her upper-level seat and claimed their territory.
"I trained this winter in Miami", Monfils said.
"I got super dizzy".
The heat peaked during Djokovic's 4-6, 6-3, 6-1, 6-3 win.
Two-time Grand Slam champion Muguruza struggled from the start to keep pace with the tenacious 32-year-old whose last WTA Tour singles title came at Guangzhou back in 2012. When it is too much, it becomes dangerous for our health.
Monfils pleaded with the chair umpire and tournament referees to extend time between points during his match, declaring his is "going to collapse" if he isn't granted more time to get ready.
"It's really tough on your feet to play in these conditions", she said.
"Really tough conditions, brutal, especially for the first hour and a half".
Juan Martin del Potro, the 2009 U.S. Open champion, had issues with the heat but still advanced along with No. 19 Tomas Berdych, No. 21 Albert Ramos and No. 5 Dominic Thiem, who rallied to beat 190th-ranked American qualifier Denis Kudla 6-7 (6), 3-6, 6-3, 6-2, 6-3.
Rafael Nadal, who contests his third-round match Friday when the temperature is forecast to rise to 42 degrees Celsius, called for organizers to use the roof on the three courts that have cover at Melbourne Park - as much for the fans as players.
"There are certain days where you just have to, as a tournament supervisor, recognize that you might need to give players few extra hours", he said.