Wikipedia - World TeamTennis

World TeamTennis (WTT) was a mixed-gender professional tennis league played with a team format in the United States, which was founded in 1973.

The league's season normally took place in the summer months. Players from the ATP and WTA would often take a break from their tour schedules to partake in World TeamTennis.

WTT was the first professional sports league to grant equal status to each man and woman competing for their teams.

Many top tennis players have participated in the league over the years, including Billie Jean King, Rod Laver, Björn Borg, Ilie Nastase, Chris Evert, John McEnroe, Evonne Goolagong, Jimmy Connors, Martina Navratilova, Andre Agassi, Pete Sampras, Michael Chang, Serena Williams, Venus Williams, Lindsay Davenport, Kim Clijsters, Martina Hingis, John Isner, Sam Querrey, Sloane Stephens, Naomi Osaka, and Frances Tiafoe.

World Team Tennis (WTT) is an innovative and exciting professional team-based tennis league that brings together top male and female players to compete in a fast-paced, entertaining format. Founded in 1974, WTT features co-ed teams representing various cities across the United States, emphasizing teamwork, strategy, and fan engagement. Matches are played on a unique format that combines men's and women's singles, doubles, and mixed doubles, with each team vying to win games and secure the overall match victory. Known for its vibrant atmosphere, colorful venues, and emphasis on entertainment, World Team Tennis offers a dynamic alternative to traditional tennis tournaments, making it a favorite among fans and players alike.