Tennis players make funny faces in the heat of battle ... especially when the pressure's on!
Check out the gnarly looks some of the top racket-wielders in the world served up during Wimbledon.
Or, if that doesn't tickle your fancy ... here's a compilation of John McEnroe's greatest tantrums. Who doesn't love that?
7/5/2014 12:05 AM PDT BY TMZ STAFF
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