Murray plans to hit the heights at crunch time

LONDON - Andy Murray admits he will have to raise his game to new heights if he wants to win Wimbledon even though he raced through the first week at the Championships without dropping a set.

While Roger Federer and Rafael Nadal - Murray's main rivals for the title - have had to dig deep just to make it to the fourth round at the All England Club, the British fourth seed has enjoyed serene progress in his first three matches.

Gilles Simon was the latest opponent to be swept aside by Murray on Saturday as he romped to a comfortable three-set win on Center Court, but there is no chance of the Scot resting on his laurels as he prepares for the business end of the tournament.