Germany’s Alexander Zverev has been disqualified from the singles event at the ATP tournament in Acapulco after a violent tantrum following defeat in the doubles. The Olympic champion, who later apologized, smashed his racket several times against the umpire’s chair with the umpire still sat on it. He almost hit the umpire’s foot and then set off on a foul-mouthed tirade. It followed a 2-6, 6-4, 6-10 defeat with Brazilian doubles partner Marcelo Melo against Britain’s Lloyd Glasspool and Finland’s Harri Heliovaara early in the Mexican morning on Wednesday. World number three Zverev, 24, had ea…