Sam Querrey saved several match points against Jarkko Nieminen to move to the quarterfinals in Winston-Salem.
Streeter Lecka/Getty Images

WINSTON-SALEM, N.C. (AP) -- American Sam Querrey edged Jarkko Nieminen of Finland, 4-6, 7-6 (7), 7-6 (12) Wednesday to advance to the quarterfinals of the Winston-Salem Open.

Querrey overcame losing the first set and five match points in the third-set tiebreaker.

The 29th-ranked Querrey will face unseeded Ricardas Berankis of Lithuania, who advanced with a 6-3, 6-3 victory over Roberto Bautista Agut.

Querrey is one of two American players remaining in the Winston-Salem Open, the final hard-court tournament before the U.S. Open next week.

Qualifier Steve Johnson, who upset second-seeded Andreas Seppi of Italy on Tuesday, will face Chinese Taipei's Yen-Hsun Lu later Wednesday.

No. 22 Tommy Robredo and No. 27 Benoit Paire also will play later.

Copyright 2014 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

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