Any respecting celeb these days has to make an appearance on a comedy sketch show and Serena Williams is no different.
The tennis ace recently appeared on MAD TV where she played 'The Black Racket', a cloaked superhero.
She served up a hilarious performance on a mission to rescue the design for president-elect Barack Obama's Ballistics And Laser Launching Satellite - or B.A.L.L.S.
Check out some pics of the hilarious cameo below.
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