Federer 'regrets' Murray defeat

Roger Federer admits he has "some regrets" after losing to Britain's Andy Murray in the semi-final of the Australian Open on Friday.

The Swiss star, who lost to Murray in the Olympic final last year, was never in front as he eventually succumbed 6-4 6-7 (5-7) 6-3 6-7 (2-7) 6-2 after more than four hours on court.

Federer says it was "a tough match", but believes his opponent was "better" on the day.

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