Gael Monfils advanced to the semi-finals of the US Open on Tuesday evening after beating Lucas Pouille in straight sets 6-4 6-3 6-3.
Although Monfils put in a great performance to ease past his fellow Frenchman, one shot in particular didn't go down too well with former world number one, turned commentator, John McEnroe.
Whilst one game down in the second set, a deep shot from Pouille set Monfils up for a trick shot, as he attempted to return the ball by hitting it through his legs.
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Unfortunately for the number 10 seed, his connection wasn't too good, and the ball just flew into the net.
McEnroe's reaction clearly showed he was less than impressed with the Frenchman's flair, and the American said with a rather dry tone while on commentary: "Are you kidding? What in the world? Well, we've said that before hundreds of times."
Perhaps if he'd pulled the shot off successfully, Monfils might have got a slightly warmer reaction from one of the sport's greatest ever players.
Luckily for the Frenchman, the miss didn't affect him too much as he went on to brush his opponent aside in straight sets.
The quarter-final win set up a match against the current world number one, Novak Djokovic, and Monfils will need more than failed flair to get passed the Serbian.
You can see Monfils' cheeky attempt in the video below.
Djokovic has had a rather fortunate path through to the semis after a walkover win, his third of the tournament, against Jo-Wilfried Tsonga on Tuesday night.
The 31-year-old was forced to retire from the match after just 81 minutes as an injury to his knee meant he couldn't play on.
Monfils will have his work cut out as he faces a well-rested Djokovic, who has said that he's reached a peak in fitness after spending just six hours and 28 minutes on court so far in the tournament.
The semi-final match will be played on Friday, with both men looking to reach one of the circuit's biggest finals.