Result: Roger Federer eases past David Ferrer in London

Result: Federer through to semi-finals in London
© PA Photos
Roger Federer continues his winning streak against David Ferrer to qualify for the semi-finals of the ATP Tour World Finals in London.

Roger Federer has booked his place in the semi-finals of the ATP Tour World Finals with a 6-4 7-6(5) victory over David Ferrer.

The world number two, who has never lost to Ferrer, survived an early scare on his serve before breaking his opponent to take a 2-0 lead.

Ferrer refused to give up the set easily though, and pulled level with a break of serve of his own. However, the Spaniard made a number of mistakes towards the end of the opener and gifted Federer three set points, which the Swiss ace gratefully accepted.

Ferrer's determination meant Federer was not able to wrap up the match quickly and the second set had to be decided by a tie-break.

Federer's quality shone through at the end of the decider as he won the tie-breaker 7-5 to ensure his progress with one match to be played in the round robin stage, against Juan Martin del Potro.

Roger Federer
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Live Commentary: Roger Federer 6-4 7-6(5) David Ferrer - as it happened
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