Alexander Zverev was kicked out of the ATP 500 tournament in Acapulco, Mexico, for "unsportsmanlike conduct" after his doubles match, the men's tour said on Wednesday. Zverev, partnering Brazilian tennis player Marcelo Melo in doubles, came perilously close to hitting umpire Alessandro Germani when he repeatedly assaulted the umpire's chair with his racquet after a 6-2, 4-6 (10-6) defeat to the British-Finn pair of Lloyd Glasspool and Harri Heliovaara. "Due to unsportsmanlike conduct at the conclusion of his doubles match on Tuesday night, Alexander Zverev has been withdrawn from the tournament in Acapulco," the ATP said in a statement. Zverev's team did not immediately respond to an emailed request for comment. After shaking hands with the opponents, the 24-year-old Zverev, ranked third in singles, approached the umpire's chair and hit it repeatedly before heading towards his courtside seat, upset over a line call during the match earlier. He approached the chair a second time and once again hit it while shouting expletives.