Murray aims to avenge loss against Verdasco

Andy Murray is determined to maintain his consistency as he prepares for another Masters quarter-final today. The British No 1 will take on Fernando Verdasco, who beat him in the fourth round of the Australian Open in January, at the Sony Ericsson Open in Miami.

Murray has been one of the form players this season, winning titles in Doha and Rotterdam, and the defeat by Verdasco in Melbourne is one of only two matches he has lost. The other came against Rafael Nadal in the final of the BNP Paribas Open in Indian Wells two weeks ago and you have to go back to Hamburg last May for the last time he failed to reach the quarter-finals of a Masters event.

Murray said: "Lately I've been finding ways to win when I've not been playing my best. I guess that's all you can do. At the end of last year my consistency was great and I've started this year really great. I need to make sure I keep it going in the next few months."

The 21-year-old was never in danger against Victor Troicki in the fourth round on Tuesday as he cruised through 6-1 6-0 in less than an hour.

"I didn't make a lot of mistakes," Murray added. "I had a high percentage of first serves and I used my slice well. I kept thinking all the way through the match. Right from the start: to get a break early set the tone. He didn't really recover from that."

Murray is ploughing a lone furrow at the highest level of the game as far as British players are concerned but a sign of better things to come emerged this week when Laura Robson became the world's top-ranked junior.

Murray said: "She's very good. She will for sure get into the top 50. But after that, you don't know. Anything can happen. She's had a few problems with injuries because she's been growing a lot, which is normal at that age."