Greg Rusedski: The shot that could cost Andy Murray Wimbledon glory

Writing in the Daily Telegraph, Rusedski bemoaned the fact that Murray relies too much on his drop shot - despite admitting that the Scot is playing it better than at any time in his career, thanks to the coaching of Amelie Mauresmo.

"I don’t dispute that she has made an excellent contribution there, nor that Andy is playing the drop-shot with better touch, greater effect and improved tactical insight this season," said Rusedski.

"What does worry me is that I don’t see the drop-shot being effective against the very best players, the ones that he needs to overcome if he is to lift this title.

"Yes, it worked brilliantly against Kevin Anderson in the Queen’s final. But then Anderson is 6ft 8in tall and doesn’t move forward all that well because of his height.

"The trick is to bring your opponent in on your terms, and that isn’t so easy when you’re playing the likes of Federer or Novak Djokovic, both of whom like to play right on top of the baseline rather than a couple of metres behind it.

"These are guys with outstanding vision, anticipation and foot speed – Federer is still lightning at 33 – so the drop-shot might be a dangerous tactic to use on multiple occasions, especially when the big points come. If you don’t hit it just right, you can be punished."

Rusedski did talk up Murray's chances, however, saying that it is his peerless speed around the court that will be the key if he is to lift the trophy again.

"You can talk all you want about the forehand – which improved out of sight under Lendl – and the touch shots that Murray has played so outstandingly well this year, but this game is about movement first and foremost.

"He is getting back to his best on that front, and the better you move the more options you have - that’s where your time is bought.

"When he feels confident and physically secure, Andy’s movement on grass is the best in the world. He takes short, panther-like steps and is always so well balanced...

"Can he win the title? Absolutely, though I don’t know if he can do it with the drop-shot!"