Williams, an eight-time Grand Slam champion, will join the St. Louis Aces when they host the New York Sportimes on July 23.
Sharapova, winner of two majors and currently ranked No. 2, will play for the Newport Beach Breakers when they host the Kansas City Explorers on July 26.
Other players who have agreed to play in the July 5-25 regular season include Williams' sister Venus, Pete Sampras, John McEnroe and Anna Kournikova
A US-based TV channel named curious details about the trials of the new Russian missile, such as, for example, the failed launch in October 2017
During the recent Helsinki summit, Russian President Vladimir Putin offered to hold a referendum in the Donbass. Trump asked not to voice this idea at the press conference
The International Olympic Committee is ready to take Russia back, the head of the organization Thomas Bach said