The stars of the ATP Tour can be identified by their strokes, their unique celebrations and their pre-point routines. But if you close your eyes and listen closely, you may be able to identify them by something else: their grunts.
ATPTour.com challenged Alexander Zverev, Jeremy Chardy, Kyle Edmund, Steve Johnson and Andrey Rublev to the ‘Guess The Grunt Challenge’, to see who would be able to figure out which grunts belong to which player.
One of the stars scored a perfect score while others were left bargaining for partial credit. Find out who was successful by watching the video above or in the tweet below.