Wimbledon 2012: Andy Murray drops his shorts A spokesman for adidas said the player would now be changing his shorts, blaming issues on an "individual technical error" with the handmade pockets. Murray, who will now play Marin Cilic on Monday, also suffered from slippery shoes, causing him to take a "tumble" which left him with a stiff knee. Speaking of the escaped tennis balls, he told the BBC: "It's happened before but not like that. It happened, like, five times. It felt like it was always about to happen. The ball felt like it was always there. When I took the break I asked about getting a ball so I was serving with one ball and not having one in my pockets. It was annoying; it lost me two points. I need to make sure I have no problems with that in the next few rounds. When asked whether he should have simply put the balls deeper into his pockets, he joked: "I'm blaming the shorts - it wasn't my fault." "I was struggling quite a bit with my footing early on, I changed shoes as well during the break and that helped," he added. The falling tennis balls had moved commentators to exclaim "That's throwing his concentration" and "That ball's come out again." One noted: "He's got £20.5m in prize money; you'd think he'd have deeper pockets at least." Murray signed a £15 million five-year contract with adidas in 2009, saying at the time: "I'm in no doubt that this deal will help me both on and off the court." On Saturday night, he was wearing white tennis shorts in keeping with Wimbledon rules. A spokesman for Adidas said: "adidas works closely with Andy on the design of all his tennis kit and we believe the issues he experienced on Saturday were the result of an individual technical error in the handmade pockets of those particular shorts. For the remainder of the tournament, Andy will change shorts and wear the Barricade Bermuda short. These are the same shorts worn by all other adidas sponsored players and have had no issues whatsoever.