North Carolina freshman Jalek Felton, a former five-star recruit who was suspended in late January for undisclosed reasons, has withdrawn from the school, his lawyer said.
Jack Sock, a 22-year-old American, was the latest victim of the heat wave that has gripped the 2015 US Open, as he withdrew from his second-round match Thursday after collapsing to the court.
Serena Williams withdrew before her semifinal at the BNP Paribas Open on Friday night with a right knee injury, 14 years after her sister Venus did the same thing and triggered an angry reaction from fans that had driven Serena to boycott the tournament.
US Open champion Marin Cilic has withdrawn from the Australian Open with a right shoulder injury.
Keegan Bradley withdrew from the BMW Championship on Saturday due to a potential rules infraction during the first round -- even though a rules official had absolved him of any violation.
Phil Mickelson withdrew from the BMW Championship early Saturday morning, bringing an abrupt end to his worst PGA Tour season in more than 10 years.
