Murray is closing in on the world number two ranking
World number three Andy Murray saw off Nikolay Davydenko in a scrappy match to reach the Montreal Masters semi-finals.
The Briton, 22, did not match the heights of his previous win over Juan Carlos Ferrero but came through 6-2 6-4 against an out-of-touch Davydenko.
Murray next faces Jo-Wilfried Tsonga, who stunned top seed Roger Federer.
If he wins the tournament or reaches the final, the Scot will overtake Rafael Nadal - who lost in the quarters - to become the world number two.
Nadal fell to a 7-6 (7-5) 6-1 defeat against Juan Martin del Potro, whileAndy Roddick sealed a 6-4 7-6 victory over fourth seed Novak Djokovic.
Tsonga staged a miraculous recovery after requiring an injury time-out and finding himself 5-1 down in the final set.
The Frenchman reeled off five consecutive games to lead 6-5 and 0-40 on the world number one's serve before Federer battled his way out of trouble and forced a dramatic tie-break.
But Tsonga kept his composure to dominate the closing stages and seal a 7-6 (7-5) 1-6 7-6 (7-3) win as Federer double-faulted on match point number four.
Murray and Davydenko had to deal with the early afternoon heat in the first of the quarter-finals.
The Scot made a far less aggressive start than in his superb win over Ferrero on Thursday, but Davydenko fired a return long off a good second serve after earning the first break point in game three.
Murray's tried and tested routine of drawing errors from opponents worked when he then broke in the following game as Davydenko hooked a simple backhand wide.
Murray having fun in Montreal
The world number three immediately handed back the advantage with a double-fault and was fortunate that Davydenko was having even more difficulty finding any rhythm.
Murray stopped the run of breaks with a comfortable hold before Davydenko obliged again with yet another string of desperately loose shots as the first set ended inside 40 minutes.
The quality of play was little better at the start of the second set and Murray was never totally comfortable as his first-serve percentage remained stuck below 50%, while his groundstrokes continued to misfire.
A fizzing backhand pass on the run at 4-4 finally got Murray - and the crowd - pumped before ace number nine helped him to within a game of victory.
The wayward Davydenko then once again obliged with a poor service game to hand Murray victory in one hour and 21 minutes.
"For me it was a very good match tactically," Murray told BBC Radio 5 live.
"Every time I've played against him, I've never felt comfortable and I never feel like I play my best tennis because he just rushes you, puts you under a lot of pressure and plays so close to the baseline that the points tend to be pretty short.
"But he made more mistakes than me and I served well, so from my point of view it was a good match."
And Murray explained that the new 'twirl' celebration which has followed his victories in Montreal is a result of discussions with friend and sometime doubles partner Ross Hutchins over the pair's relative dancing skills.
"I did it after my first match and then after that one, and only if I remember I'm going to do it," he said. "It's just a bit of fun."
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