WASHINGTON — Top-seeded Andy Roddick needed a third-set tiebreaker to beat Eduardo Schwank 4-6, 6-4, 7-6 (2) and advance to the quarterfinals of the Legg Mason Tennis Classic on Thursday.

Schwank, who started the year ranked No. 171 and has risen to 56th, twice served for match point up 5-4 in the third set, double-faulting on the second chance to open the door for Roddick.

"To win a close one like that and to face some adversity is a good thing," Roddick said.

Viktor Troicki beat Bobby Reynolds 6-4, 1-6, 6-4 and also advanced to the quarterfinals, where he will meet Roddick.

CINCINNATI WOMEN'S OPEN: At Mason, Ohio, fifth-seeded Amelie Mauresmo and sixth-seeded Aleksandra Wozniak easily advance to the quarterfinals of the $175,000 Cincinnati Women's Open with straight-set wins on Thursday.

Wozniak advanced by beating Julia Vakulenko 6-2, 6-3, before Mauresmo became the last quarterfinalist with a 6-3, 6-1 win over Yanina Wickmayer.