From Roger Federer debating where his loyalties lie to Gael Monfils revelling in England's beer-soaked celebrations, it's safe to say World Cup fever has broken out at Wimbledon. With Wimbledon's two-week tournament running at the same time as the World Cup, many of tennis's top stars are dividing their time between their own title aspirations and those of the footballers in Russia. The World Cup is the talk of the locker room, according to Frenchman Monfils, with players putting aside on-court rivalries to gather round when matches are on television.

"The World Cup is definitely different. We have been chatting in the locker room, and for sure I have some comments. I watched the games actually in the locker room," Monfils said. The flamboyant Monfils took his World Cup fixation one step further, venturing into London to watch some of England's dramatic last 16 win over Colombia on Tuesday. Spotting a packed pub, Monfils stepped inside to see the tense penalty shoot-out finale and couldn't believe how raucous the atmosphere was. "I saw on the phone it was the shootout and I saw a pub, so I just went in and watched it," he said. "Unbelievable. Crazy, crazy! I can't describe it. I was scared to have my phone. "It was jumping, screaming. Everything. Beers, everything. It was great." Eight-time Wimbledon champion Federer, also a father of four children, has managed to find room in his busy schedule to watch the World Cup.