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Jamie Murray and Australian John Peers marked their debut at the World Tour Finals with victory over Australian Open champions Fabio Fognini and Simone Bolelli.
Murray and Peers are seeded fourth in the doubles at the O2 Arena after a superb season that saw them reach the final at both Wimbledon and the US Open.
And they were in fine form in the opening match of the end-of-season tournament in London, holding their nerve to win the deciding match tie-break and clinch a 7-6 (7/5) 3-6 11-9 victory.
Murray is only the second British player to qualify for the doubles after Jonny Marray since the event moved to the O2 in 2009 and a good crowd was in place to watch the Scot.
Murray and Peers looked confident from the off and deservedly took the opening set on a tie-break after seeing a set point go begging in the 10th game.
They recovered from 4-1 down in the second to 4-3 but a mistake from Murray gave the Italians another break and they levelled the match.
That left proceedings to be decided by a match tie-break, with the winner the first to 10 points, or by two clear points thereafter.
It was nip and tuck all the way through but a crucial mini-break for 10-9 left Murray serving for victory, and a smash from Peers proved too hot for the Italians to handle.
The victory gives Murray and Peers, who are playing their final tournament together before parting ways, a great chance of reaching the semi-finals.
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