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'Is that sweat': Australian Open star's unfortunate wardrobe malfunction

Stefanos Tsitsipas, pictured here in action during the Australian Open quarter-finals.
Stefanos Tsitsipas' sweat marks had fans talking at the Australian Open. Image: Getty/Channel Nine

While Stefanos Tsitsipas was putting together one of the most remarkable comebacks in Australian Open history on Wednesday night, fans couldn't help but notice an unfortunate detail about his outfit.

The Greek star shocked Rafael Nadal in their quarter-final clash, staging an insane comeback to win 3-6, 2-6, 7-6, 6-4, 7-5.

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With the match lasting over four hours and finishing in the early hours of Thursday morning, both players were understandably sweaty due to the humid conditions in Melbourne.

However an unfortunate oversight from his clothing sponsors left Tsitsipas with a big sweat patch on a rather embarrassing area of his shorts.

Fans couldn't help but point out the awkward scenes on social media.

Tsitsipas shocks tennis world with Nadal epic

Nadal's tilt at a record 21st grand slam will have to wait after Tsitsipas delivered one of the sport's more extraordinary comebacks to beat the great Spaniard.

Up two sets to love on Rod Laver Arena on Wednesday night, the World No.2 appeared well on his way to a 35th grand slam semi-final until the Greek found his wings.

Tsitsipas hunkered down to pinch the third set in a tiebreak, then went on to claim the match of the tournament to set up a last-four match with Daniil Medvedev.

"It's an unbelievable feeling to be able to fight on such a level," Tsitsipas said after the match.

"I don't know what happened after the third set, I flew like a little bird - everything was working for me."

Stefanos Tsitsipas, pictured here in action against Rafael Nadal at the Australian Open.
Stefanos Tsitsipas in action against Rafael Nadal at the Australian Open. (Photo by TPN/Getty Images)

The loss leaves Nadal equal with Federer on 20 grand slam wins, Novak Djokovic moving to 18 if he is victorious at Melbourne Park for the ninth time.

"Of course (I'm ) sad," Nadal said.

"I lost a match in the quarter-finals of an event that mean a lot to me.

"The Australian Open is one of my favourite events, without a doubt. So I missed an opportunity to be in the semi-finals again."

Unfortunately the slam hasn't always loved Nadal back.

He's secured just one trophy here in 2009 - making for his least successful major while also having his share of bad luck including picking up an injury during the 2014 decider against Stan Wawrinka.

with AAP

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