MEMPHIS: Sam Querrey rallied for a 6-7 (3/7), 7-6 (7/5), 6-3 triumph over fellow American John Isner in the final of the ATP Tour’s Memphis tournament on Sunday.

Isner, the sixth seed, overpowered

his doubles partner in the first set, but

faltered after taking a 5-2 lead in the

second-set tiebreaker. Eighth-seeded Querrey, who remarkably dumped

out top-seeded Andy Roddick in the quarter-finals, battled back to claim the third title of his career and first of 2010.

Querrey, who was never broken in the match, won two straight points on

Isner’s serve to take a 6-5 lead in the

second-set tiebreaker and rolled from there. He broke Isner for a 2-1 lead in the third, and broke again to seal the match.

Isner had been in firm control, taking

a 5-2 lead in the second-set tiebreaker when Querrey mis-hit a return.

But the mistake seemed to focus Querrey, who won five straight points, starting with an ace. In the third set Isner’s formidable first serve began to flag, while Querrey’s serve got stronger and stronger. The two were on the same side of the net to win the doubles title later with a 6-4, 6-4 victory over Ross Hutchins and Jordan Kerr.