Rafael Nadal has withdrawn from Wimbledon a day before he was supposed to play in the semifinals because of a torn abdominal muscle. Nadal announced that he was pulling out of the Grand Slam tournament at a news conference on Thursday. The 22-time Grand Slam champion was scheduled to face Nick Kyrgios for a berth in the final on Friday. Kyrgios will meet either Novak Djokovic or Cam Norrie for the championship on Sunday.