Spain's Fernando Verdasco won the first ATP hard-court title of his career with a 6-4 7-6(6) victory over American Sam Querrey at ATP New Haven, just hours after he had won his semi-final.

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The 25-year-old second seed had earlier dispatched Igor Andreev of Russia 7-6 7-6 in his semi-final to advance to the final against sixth-seeded Querrey.

The American had beaten Jose Acasuso of Argentina 6-3 6-4.

Both had won their semi-finals indoors before returning to the court about four hours later.

Verdasco needed only 32 minutes to dispatch Querrey in the first set, and while he held a 4-2 lead in the second, the tall American fought back to break the Spaniard in the eighth game and force a tie-break.

"The second set was a little bit strange because I was 4-2 up, playing good," Verdasco said.

"He started playing much better; I started playing a little bit worse," Verdasco said. "I don't know how I turned it around again, with 6-3 down in the tie-break."

Denmark's Caroline Wozniacki became the first woman since Venus Williams in 2002 to retain the women's title, defeating Russian Elena Vesnina 6-2 6-4.

"It was different (to last year)," Wozniacki said.

"I mean, the last year was my second final and my second tournament win. It was something new. I never tried before. This year it was already my seventh final."