Originally written on Fox Sports  |  Last updated 11/19/14

DOHA, QATAR - JANUARY 07: Ernests Gulbis of Latvia in action against Roger Federer of Switzerland during the quarter final match of the ATP Qatar ExxonMobil Open at the Khalifa International Tennis and Squash Complex on January 7, 2010 in Doha, Qatar. (Photo by Ian Walton/Getty Images)
Ernests Gulbis says you have to be a robot to be a top tennis player these days, but the Latvian certainly did not look like one as he smashed rackets, yelled at the umpire and came storming back from 4-0 down in the final set Thursday to oust No. 3 seed Sam Querrey 6-4, 4-6, 7-6 (4) in the second round of the Delray Beach International. Gulbis, whose huge talent frequently has been undermined by a suspect temperament, shrugged off a point penalty at the start of the third set and made the most of uncharacteristic serving errors from Querrey. The big American double-faulted on game point to lose one of his breaks and then came up with a pair of them on the last two points of the match when he was 5-4 down in the tiebreaker. "It was a bummer," Querrey admitted. "I had him on the ropes. I don't usually do that sort of thing. I played a sloppy game at 4-0 and then started getting tentative on a couple of shots. He always serves well, but he was returning a bit better than usual, too....
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