One of the sport's top five players, Serena loves pushing the fashion envelope—back in the early '00s, she wore a Lycra catsuit during the U.S. Open to great fanfare. Since then, she's launched both her own clothing collection, Aneres ("Serena" spelled backwards) and collaborated with HSN. A fan of experimental manicures, the 30-year-old even became a certified nail technician in 2010.
Serena's big sis launched her own fashion line, EleVen, in 2007. The cute tennis dress she's wearing in the above photo is of her own design—and we're big fans of those matching pink-dipped braids, too.
The world's No. 3-ranked tennis pro was once notorious for his on-court "pirate" garb. Now, in addition to having snagged Nike as a sponsor, "Rafa" fronts campaigns for the likes of Lanvin, Emporio Armani Underwear and Armani Jeans. And as you can see here, he's a stellar color-blocker.
This stunning Danish star has endorsed Stella McCartney's Adidas collection, and first wore a dress from the line at the U.S. Open three years ago. Like Federer, she's also worked with Rolex.
The world's No. 2-ranked player won his first U.S. Open just last year. This past May, Uniqlo tapped the Serbian star to become its global brand ambassador, a role that saw him designing his own tennis line for the company.
Though retired from the sport, Enrique Iglesias' former flame has fronted campaigns for Adidas, Omega watches, K-Swiss and more, thanks in part to her stunning good looks.
With his signature headband and preppy attire, this Swede's the original Richie Tenenbaum. What more can we say?
This statuesque brunette is the face of Adidas, and is also sponsored by Rolex. Her cute color-blocked tennis dresses never fail to wow us, and her signature on-court braid arguably makes her the Katniss Everdeen of the tennis world.