From Sporting Life:

PETCHEY EYES US OPEN FOR MURRAY

Coach Mark Petchey has played down Andy Murray's chances of dethroning three-time Wimbledon champion Roger Federer this summer - but agrees he could be a threat at the US Open.

The new SAP Open champion is £35,000 richer after his victory in San Jose, where he beat Andy Roddick and Lleyton Hewitt in successive days to stun the tennis world.

Both Roddick and Hewitt have triumphed at the US Open in New York - and that too is where Petchey expects Murray to be a serious threat, during August and September.

"I personally don't think he has a chance of winning a slam at the moment on grass," Petchey told Sky Sports News.

"I think Federer's shown how complete he is on that surface. I would have to say the US Open if you were looking at one that is going to be his best chance."

Murray was an unknown quantity at senior level 12 months ago, but he had won the US Open boys' title in 2004.

His next grand slam will be at the French Open in late May, where last year he was a semi-finalist in the boys' singles.

By the time Roland Garros comes around, Murray will have turned 19 - and Petchey hopes to have seen his star pupil climb even higher from his new ranking of 47th in the world.

"It's hard to keep a lid on it with how well Andy's done. But the next goal, once he's broken the top 50, is try to get him in the top 32 before the French Open so that he gets seeded," said Petchey.

"Then I hope he can avoid some of the bigger names in the opening couple of rounds.

"I said a week ago that I still believe you're going to see Andy's best tennis in his 21st year - and I still maintain that."

Murray defeated Australian Hewitt in three sets last night to collect his first ATP tour title at the age of 18.

"It's a phenomenal effort to go and beat two former world number ones, especially Roddick in a tournament he loves," said Petchey.

"Then to beat Hewitt in the final of any event underlines Andy's potential."