US tennis legend John McEnroe reckons Andy Murray is one of an elite band of players who can win Grand Slam tournament as he is still evolving as a player.
The British number one is currently in action at the US Open and swept past Slovakian Lukas Lacko 6-3, 6-2, 6-2 in the first round at Flushing Meadows.
It was an easy win for the Brit as he demonstrated his full repertoire of skills as temperatures rocketed in New York.
Murray recently sacked his coach but has put in some impressive performances since parting ways with Miles Maclagan.
At the Masters series in Toronto he beat Roger Federer and Rafael Nadal, and if he wants to make it to the US Open final then he is likely to have to defeat the both of them again - with the Scot in the same half of the draw as the Spaniard.
Murray's path could have become a little bit easier however as potential quarter-final opponent Tomas Berdych went out in the first round, something of an upset in the US Open betting
McEnroe claims he would be "very surprised" if it was not one of Federer, Nadal or Murray who lifts the US Open title, but he is confident that the Scot will break his Grand Slam duck sometime soon. The US Open odds
suggest he is in with a chance.
He told the BBC: "Andy can absolutely win it - if it doesn't happen this year, maybe next year.
"The difference with Andy is his willingness to go after the ball, to be more aggressive. This is something he may have been thinking about for a while."
Murray has himself admitted that it was "surprising" to see Berdych go out of the tournament, but was happy with his own performance in the first round and particularly thought he "served well" and was "happy" to go through in straight sets.