Co-founded by Billie Jean King, World TeamTennis is America's only professional co-ed team sport. After Wimbledon, WTT takes center stage in professional tennis. Tennis fans have the opportunity to watch world-class men and women professionals on the same team playing singles, doubles and mixed doubles in an exciting and unique format.

The players themselves enjoy the camaraderie of team play. They like the hometown support and the drama of every game counting as one point toward the overall score and outcome. Simply put, it's fun!

Each team is comprised of four players (two men and two women). The unique playing format consists of five sets -- one set each of men's and women's singles, men's and women's doubles, and mixed doubles. The team that wins the most overall games is the winner. Go to the glossary to better understand the format. There are11 professional WTT teams.