By Piers Newbery BBC Sport at Wimbledon

Andy Murray was thrilled to reach the second week of a Grand Slam for the first time with his victory over Andy Roddick at Wimbledon.

Murray won 7-6 (7-4) 6-4 6-4 to reach the fourth round.

"To get into the second week of a Grand Slam for the first time is great," said the 19-year-old Scot.

"I'm not used to being around the locker room when there's only 16 people left - it's much quieter. I'm obviously looking forward to playing again."

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Murray was in superb form as he swept past twice runner-up Roddick in straight sets, and showed no sign of his sometimes volatile temper.

"It's easy when you're playing like that to keep your cool," he said.

I'm very disappointed, I'm not happy, I'm mad Andy Roddick

"I get really annoyed when I'm playing badly because I'm a perfectionist.

"When I'm playing badly is when I get upset, but if I'd lost the third set playing like that it wouldn't have dented my confidence because I was playing so well."

And Murray is confident he can go one step further when he faces Marcos Baghdatis in the last 16 on Monday.

"If I play like that I think I've got a good chance of winning my next match," he said.

"I think (Lleyton) Hewitt's the highest seeded guy in my section and he's obviously won Wimbledon and two Grand Slams, so I wouldn't really expect to get past the quarter-finals if I had to play him."

Roddick admitted there is "an edge" missing to his game at the moment and said: "I'm very disappointed, I'm not happy, I'm mad - whatever adjective you want to throw out there."

And Roddick, who also lost to Murray in San Jose in February, paid tribute to the Briton.

"He's great at hitting on the move, picking a ball up an inch off the ground he can still find something to do with it without going for broke.

"I'm not sure who to compare him to but he's a very deceiving mover and he hits very well on the run."