Mylan World Team Tennis co-founder Billie Jean King sold her a majority ownership stake of the league to Mark Ein and Fred Luddy, the league announced on Monday. Ein is the founder and owner of the Washington Kastles and Luddy is the owner of the San Diego Aviators. 

“After 42 seasons of World TeamTennis, Ilana (Kloss) and I feel this is the time to pass the baton to Mark Ein and Fred Luddy, and entrust the legacy of WTT as an innovative force in tennis to them and their team,” said King. “I will continue to be part of the league as a minority owner and as the owner of the Philadelphia Freedoms, and I am confident the league will continue to grow and prosper under Mark and Fred’s leadership.”

Ein and Luddy will use their strong entrepreneurial background to continue to expand the league, and bring tennis events to new markets across the country. 

“This is such a fabulous product, some of the best men and women players in the world forming a team combined with a forward-thinking scoring system and high energy atmosphere, the opportunity for growth is phenomenal,” said Fred Luddy. “We look forward to building on this wonderful legacy.”

King founded WTT in 1974 based on her philosophy for gender equality and has been running continuously for over 40 years. 

The 2017 season runs from July 16-August 5 and will feature prominent players such as Venus Williams, Andy Roddick and Martina Hingis.