A ball carrier wears a face mask prior to the friendly soccer match between Paris Saint Germain and Le Havre, in Le Havre, western France, Sunday, July 12, 2020. For the first time since the coronavirus shut down sports and chased away spectators, Neymar, Kylian Mbappe and other soccer stars are going to play again in front of fans. (AP Photo/Thibault Camus)

Kansas City Royals pitcher Brad Keller watches from the dugout during baseball practice at Kauffman Stadium Friday, July 3, 2020 in Kansas City, Mo. (AP Photo/Charlie Riedel)

Los Angeles Dodgers' A.J. Pollock warms up prior to an intrasquad baseball game Wednesday, July 15, 2020, in Los Angeles. (AP Photo/Mark J. Terrill)