Mylan World TeamTennis presented by GEICO is tennis like you've never seen it, featuring the biggest names in the world playing together in an innovative co-ed team format. Beginning on July 7, WTT will celebrate its 38th 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 Billie Jean King co-founded the League in 1974, WTT has been an innovator in the sports world. The 2013 season will bring a roster of leading pros and rising stars to cities across the nation.