article: Tennis champion Novak Djokovic has apologised to a startled ball boy and his parents after the Serbian player startled him during his final showdown with Andy Murray. Djokovic started shouting at his backroom team after he lost the second set of the Miami Open to Murray. During the tirade, Djokovic grabbed a towel from the shocked youngster who was caught up in the crossfire. Umpire Damien Dumusois issued Djokovic a warning for the way he shouted at his support team, but there was no reprimand for the manner in which he treated the ball boy. Tennis champion Novak Djokovic issued an apology to a ball boy he frightened during the Miami Open . Djokovic shouted at his backroom team when the ball boy got caught up in the cross fire . Djokovic grabbed a towel from the ball boy, pictured, who seemed startled by the loud confrontation . However, following his victory, Djokovic posted a message on his Facebook page apologising to the youngster and his parents. He said: 'It's probably been the best start to a season aside from 2011 that I had in my career, and I can't be more grateful for all the support I'm getting from you guys and I'm enjoying my time playing and competing and hopefully I brought a smile to your faces. 'Also I want to reflect on a bad moment that happened in the final against Andy when I lost the second set. I yelled to my camp and my box in frustration . 'I saw the replay. Unfortunately a ball boy was in the middle of it and I really, really feel sorry and regret that he was there. There was absolutely no intention whatsoever to hurt him or scare him in any kind of way. I sincerely hope he forgives me. I really apologise.' Djokovic then extended his apology to the boy's parents. 'I do care about children a lot right now and I look at it in a much different way,' he added. 'So I want to apologise to his parents for this situation as well. As a father I wouldn't wish that something like this happens to my son. 'Again I sincerely hope you can forgive me and that we can move on. Unfortunately sometimes the emotions get the better of you. 'Also times as a professional athlete you learn how to control them and how to stay composed and mentally strong. But on a hot day like this when Andy was playing well and pushing all my buttons it wasn't easy.' The youngster was standing between Djokovic and his backroom team during the heated exchange . Djokovic, right, defeated Britain's number 1 Andy Murray, left, following Sunday's final in Miami .
highlights: Novak Djokovic lost his cool during Sunday's final showdown in Miami .
  Djokovic started shouting at his backroom team after Andy Murray won set .
  The Serbian tennis champ asked the youngster for his 'forgiveness'
  He said he got emotional because 'Andy was playing well'
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