World number three Alexander Zverev was kicked out of the ATP 500 tournament in Acapulco for “unsportsmanlike conduct” after smashing his racket repeatedly against the umpire’s chair following a double defeat. The German later apologised for his behaviour after he and Brazil’s Marcelo Melo lost 6-2 4-6 (10-6) to the British-Finn pair of Lloyd Glasspool and Harri Heliovaara. Zverev came perilously close to hitting umpire Alessandro Germani during his tantrum in Mexico. “Due to unsportsmanlike conduct at the conclusion of his doubles match on Tuesday night, Alexander Zverev has been withdrawn from the tournament in Acapulco,” the ATP said in a statement.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 said he regretted his behaviour. “It is difficult to put into words how much I regret my behaviour during and after the doubles match yesterday,” Zverev said in a statement. “I have privately apologised to the chair umpire because my outburst towards him was wrong and unacceptable, …