Del Potro wins Auckland tournament
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Del Potro, who won four tournaments last year -- two on clay and two on hard courts -- broke Querrey's service in the ninth game of the second set and then held serve to close out the match.
Querrey was attempting to win his second career ATP tournament after capturing his first title last year at Las Vegas.
The Argentine opened the match with a service break, but Querrey evened the set at 3-3 with a break in the sixth game. After the American took a 4-3 lead, Del Potro won three games in a row to take the opener after Querrey had saved three set points.
"Sam is a very good player with a great serve but today I won the break points and he didn't," said Del Potro.
Querrey felt he needed a better first-serve percentage than the 55 percent he had Saturday.
"I would like to be getting 70 percent or higher of my first serve. You can't play average and beat guys in the top 10," Querrey said. "He converted two break points and it seemed in the second set he made every first serve."
The tournament completed preparations for both players ahead of the Australian Open, starting Monday.
It was the 36-year-old Damm's 38th career doubles title, while Lindstedt has four.
Copyright 2009 by The Associated Press
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