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Elsewhere, Roger Federer returned to action with a battling 7-6 (7-2) 6-4 win over American qualifier Robby Ginepri.
BBC: Murray strolls to win over Chela
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Fellow Briton Richard Bloomfield went down 6-4 6-2 to Robby Ginepri, and Max Mirnyi beat Fernando Verdasco 6-3 6-3.
BBC: Bogdanovic and Baker go through
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Juan Monaco beat Sam Querrey 1-6 6-2 6-3 before Horacio Zeballos secured the trophy with a 6-4 6-7 7-5 defeat of Robby Ginepri.
CNN: Sharapova warms up for Roland Garros with title win
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Ginepri, who is said to be dating British actress Minnie Driver, fell behind 6-4 in the second-set tie-breaker before finally winning it 9-7.
BBC: SPORT | Tennis | Roddick makes last eight
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"I came up with probably one of the best shots I've hit all year at 5-6 and after that shot I got a little momentum, " said Ginepri.
BBC: SPORT | Tennis | Roddick makes last eight
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Earlier, France's Gilles Simon defeated James Blake of the United States 3-6 6-1 6-4, while Blake's compatriot Robby Ginepri progressed with a 6-4 6-4 victory over France's Michael Llodra.
BBC: Bolelli injury hands Murray win
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In other second-round matches, eighth seed Janko Tipsarevic lost to Viktor Troicki 6-3 6-4 in an all-Serbian match, and Igor Kunitsyn of Russia ousted Robby Ginepri of the United States 6-4 6-3.
BBC: Jankovic battles past Dushevina
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Gasquet won the first two sets but Youzhny finally won 6-7 (9-11) 4-6 7-6 (7-2) 7-6 (7-4) 6-4 in four hours and 52 minutes to earn a second-round clash with unseeded Czech Jan Hazek, who beat American Robby Ginepri in straight sets.
CNN: Federer survives early Melbourne scare
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The Swede -- who beat Federer in an exhibition tournament in Abu Dhabi last week before losing in the final to Nadal, on whom he inflicted a shock defeat at last year's French Open -- was beaten in straight sets by American Robby Ginepri.
CNN: Federer and Nadal cruise as nemesis Soderling crashes out