Andy Murray knows exactly when to turn the screw and his 6-4, 6-4 victory over Guillermo Garcia-Lopez highlighted his ability to move through the gears.

Murray made a winning start to his singles grass-court season with a comfortable win over Italy's Andreas Seppi at Queen's yesterday and he raised his game just enough to power past Garcia-Lopez.

The Spaniard, ranked 52nd in the world, stood toe-to-toe with Murray for the first eight games but as the first set drew to a close, Murray turned up the heat and raced away.

The second set followed a similar pattern, the only difference being Murray securing the pivotal break in the fifth game, before strolling into the quarter finals.

"It was a tough match to come through but I'm pleased with the way I did," said Murray. "He played a good match and he was a difficult opponent.

"It took me a while to get going but once I got the break I grew in confidence a starting striking the ball a lot better.

"And in the second set I felt a lot more comfortable. I sat back a bit today and didn't come to the net that much - it all depends on the opponent really."