Murray has huge boost to self-belief Church Road, London Middlesex England

Andy Murray heads into today's last 16 admitting that his confidence has had a much-needed boost by the fact that he got through the first week without dropping a set. The No.4 seed has shown scant form since losing to Roger Federer in the final of the Australian Open five months ago, and even on the grass of Queen's earlier this month he went out in the last 16. But with three rounds of Wimbledon behind him, he is yet to surrender a set. As he prepares to face Sam Querrey in the fourth round, the Scot is grateful for the boost to his self-belief.

"The start has been very good and something that I needed for my confidence," he confessed. "I did feel I wasn't too far away from playing very good tennis again. I just needed to put more work in and I did that the week before [Wimbledon]. So that definitely helped my belief going into the tournament. It's obviously showed in the first few matches. I haven't lost my serve once since my second service game in the first round. So it's been good. But I'm going to have to play better next week if I want to go all the way."

Murray has never previously lost to Querrey in the senior ranks. But with the American coming into Wimbledon as the surprise winner at Queen's, Murray will show him due respect when they meet on Monday on the Centre Court.

"Tough match," remarked Murray. "He's a very good player. He's got a big serve, bigger than the guys I've played so far, slightly more unpredictable game. Rallies will probably be a little bit shorter. There are certain things you obviously want to do against big guys. You want to keep them on the move as much as possible. Sam has a very good serve, and he serves a lot of aces. But I've played well against him in the past. He's someone I've had good success against. Hopefully I can get another good result on Monday."

It will help, of course, that he has such vast experience of the Centre Court. He understands what the conditions are likely to be, given that his match will be third on, most likely in the late afternoon or early evening.

"It's a great court to play on," he agreed. "Everybody will tell you that. The more you play on it, you get used to the speed of the court. The time you play does change the way the court plays. When the sun goes down it gets a little bit slippy and it slows down. It's a court I love playing on. In the first week I've played at different times and in different conditions and come through it well."