Andy Murray was no doubt left heartbroken following his shock defeat against John Isner in the second round of Wimbledon - however, it isn't all bad as the tennis star will return to the court in September.MORE: Andy Murray makes touching comment about wife Kim during 'difficult' career momentThe three-time Grand Slam champion is joining Roger Federer and Rafael Nadal at this year's Laver Cup which is taking place in London for the first time.WATCH: Andy Murray breaks down in tears after incredible comeback"I'm looking forward to playing the Laver Cup in London," the 35-year-old said. "I love playing as part of a team and there is a great atmosphere and intensity to the event.