Oxfordshire Tim Henman admitted he faces a tough battle today against Thomas Johansson after coming from behind to beat third-round opponent Chris Guccione at Queen's yesterday.

The British No 1, who has never played sixth-seed Johansson on grass, was satisfied with his performance, despite dropping the first set in his 6-7, 6-2, 6-2 victory over the Australian.

"I did a great job on my own serve," said the 30-year-old. "I feel good about my game at the moment, but it's going to be a tough one."

Henman takes on Johansson after the Swede earlier beat 18-year-old Andrew Murray.

The Scot who was hit by cramp, lost 7-6, 6-7, 7-5 in a dramatic third-round tie.

Murray had a set point in the first set, before Johansson took it 7-1 on a tie-break, but Murray fought back to win the second-set tie-break.

The players traded breaks in the decider and a cramping Murray had to stave off four break points at 3-3.

The teenager then hurt an ankle in a fall and twice received treatment before Johansson finally came through.

Murray, who could be heard telling the trainer he heard 'something crack' as he fell, could barely run at one stage.

Sixth seed Johansson said he had been hugely impressed by his opponent, playing in only his fourth ATP match.

"It was very tough," said the former Australian Open champion. "I'm very impressed with the way he's playing - especially his serve and his groundstrokes - and he's going to get even better."

And Henman also had words of encouragement for his fellow-Briton.

"He played some fantastic tennis and he'll learn a lot from it," he said.

It was not a good day for Briton Greg Rusedski who bowed out 6-3, 7-6 to fourth seed Radek Stepanek.

Rusedski served three double faults to drop his opening game before losing the first set 6-3.

Stepanek broke at 4-4 in the second and served for the match but Rusedski broke back to earn a tie-break, before the Czech won that 7-4.

He will play Frenchman Richard Gasquet.

Andy Roddick battled to a 6-2, 3-6, 6-4 win over Karol Beck.

He faces Sebastien Grosjean in a repeat of the 2003 and 2004 finals.