The World TeamTennis Pro League is tennis like you've never seen it, featuring the biggest names in the world playing together in an innovative co-ed team format. In July, WTT celebrated its 36th season. The Pro League features world-class, competitive tennis and a great fan experience – it’s a little bit rock n’ roll in that its raucous, in your face, and a whole lot of fun. Since its co-founding by Billie Jean King in 1974, WTT has been an innovator in the sports world. The 2011 season brought a roster of leading pros and rising stars to cities across the nation.