Wimbledon 2012: Andy Murray calls on Centre Court crowd to will him to title over Roger Federer Murray himself kept a low profile yesterday, only appearing for an hour's training on the Wimbledon practice courts at Aorangi Park. But he did speak to reporters about the importance of keeping a level head. "All of the Grand Slam matches I have played have been important to me," Murray said. This is my next match and I focus on it like any other one. For sure it will be one of the biggest matches in my life," he added. But if I look upon it as the Wimbledon final and [think about the fact that] no Brit has won it for however long and there's this many people watching, I'm going to play crap. The influence of British support has not been relevant in a Wimbledon singles final since Virginia Wade won here in the silver jubilee year of 1977. But while tennis might not normally be thought of as a "home advantage" sort of sport - especially in bashful Britain - the four-time Wimbledon semi-finalist Tim Henman believes the crowd can play a huge part in influencing the result of a match. "For me it [the support] was amazing and for Andy it is the same," said Henman. The volume on court will be all the greater if the forecast showers force Wimbledon referee Andrew Jarrett to deploy the Centre Court roof, which has been such an integral part of this year's tournament. The closure of the court can have a significant effect on the way a match unfolds, and on Friday Federer proved this with a spectacular display of serving in the windless conditions to eliminate Novak Djokovic. Federer is renowned as the best indoor player in the world, because he prefers to keep points short by aiming for the lines, and that is easier when you don't have to contend with the elements. But Murray will not be devastated if the weather turns nasty this afternoon. If this turned out to be the first indoor final at a Grand Slam, the players would find themselves playing inside a 3,000-ton pressure cooker.