Murray marches past Tsonga

Andy Murray produced an excellent display as he beat Jo-Wifried Tsonga 6-4 6-1 to reach the quarter-finals of the Sony Open in Miami.

The British No 1 broke early in the first set to get the upper hand and, from that point, never relinquished control of the contest against his French opponent.

He served superbly throughout, not facing a single break point during the match, and eventually wrapped up victory in just 73 minutes.

Indeed, the only downside for the Scot was the fact he was forced to call the trainer midway through the first set. But, after a brief consultation, he did not require treatment and would continue showing no ill effects.

Having threatened the Tsonga serve in the opening game, Murray did break at the second time of asking as he opened an early 3-1 advantage.

He had chances in his opponent's next service game to extend the lead but Tsonga responded well to see off the danger.

It was in the following game that Murray appeared to pull up with more pain in his back, but still Tsonga was unable to make any impact on the Scot's serve.

Indeed, even after Murray's visit from the trainer at 4-3, the Scot was still able to come out and hold to love and would go on to serve for the set with the minimum of fuss.

Murray would then underline his dominance by breaking in the third game of the second set, dispatching a drive-volley forehand up the line to assume a 2-1 lead.

He would then move through the gears and, having held serve to move 3-1 ahead, won 14 points in a row to bring up three match points against a totally dejected Tsonga.

The Frenchman did end that run to deny his rival on his first match-point and then survived again after a challenge came back in his favour.

But it was merely delaying the inevitable and Murray closed out victory when his opponent netted an attempted backhand pass.

Murray was pleased with his performance and felt that the key to the win was taking his opponent out of his comfort zone.

"I served well, I didn't give him any opportunities on my serve at all, and then as soon as the ball was short I attacked him," he told Sky Sports 3.

"I came forward, I kept him away from the net which is where he likes to be. That's when he plays his best tennis, when he's the one coming forward, so I kept him pushed back on the baseline.

"I made very few unforced errors and it was a good match."

The quarter-final against Djokovic will be the first time the two men have met since the final at SW19 and Murray feels he is getting to his best form at the right time.

"I'm looking forward to it, it's a great test for me," he added.

"I think my game is kind of close to where I want it to be right now and he's obviously playing very good tennis again, winning last week and he's been pretty comfortable so far here.

"It's always a fun match up against him and we've played here a few times so it'll be another tough one."

Murray also confirmed he will speak to his medical staff about the discomfort in the first set, although he does not believe it held him back.

"I'm not sure, I haven't had it assessed yet so I'll go and see my physio when I get off the court, have a chat about it, and see what the problem is," he added.

"I was still moving well, it was just painful. I thought I moved pretty well at the end at the match and loosened up as it went on."