Today Jamba Juice announced it had partnered with Venus Williams in a deal to develop stores in the Washington area. "I have been a long-time fan of Jamba Juice and its mission to help inspire and simplify healthy living," Williams says. "Regardless of the venue—whether I am on the tennis court or on an interior design project—keeping fit and eating healthy are critical to ensuring I maintain peak performance." (I guess a fruit smoothie is a good way to cancel out the negative effects from all those Oreo cookies she's been eating.) Of course, Williams isn't the first player to bond with a company that specializes in beverages. Ana Ivanovic wouldn't be Ana without help from Juice Plus+. The veggie/fruit drink-maker, she says, keeps her healthy while she criss-crossing the world: (Did you know she was voted "best looking spokesperson" by readers of Die Bild and The Age?)

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Of course, Venus' sister Serena and Gatorade were a match made in sports drink heaven. Remember her "real G moment" during her victory speech at last year's Australian Open? And even Roger Federer has gotten in on the liquid products action. As this clip shows, this man can talk about anything:

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—Sarah Thurmond