(Sports Network) - Top seeds David Ferrer and Andy Roddick were among Thursday's third-round winners at the $869,000 Japan Open Tennis Championships. The reigning Tokyo champion Ferrer rallied to top Japan's Takao Suzuki in three sets, 4-6, 6-3, 6-2, while Roddick had little trouble dispensing of No. 14 seed Jurgen Melzer of Austria, 7-6 (7-2), 6-2.

Ferrer will face fifth seed Juan Martin del Potro of Argentina, who routed 11th-seeded Jarkko Nieminen of Finland, 6-1, 6-3, in the quarterfinals. Meanwhile, Roddick secured a date with Serbian Viktor Troicki.

Troicki dropped the first set to seventh-seeded Frenchman Jo-Wilfried Tsonga in their third-round match, but Tsonga was forced to retire in the second set with an abdominal strain.

In other third round action, ninth-seeded Czech Tomas Berdych reached the quarters after ousting No. 6 Tommy Robredo of Spain, 7-6 (8-6), 6-2, while third-seeded Fernando Gonzalez of Chile outlasted American Amer Delic, 6-4, 7-6 (7-4).

Also, fourth seed Richard Gasquet of France destroyed local favorite Kei Nishikori, 6-1, 6-2, and 12th-seeded German Rainer Schuettler bested eighth- seeded Mikhail Youzhny of Russia, 6-3, 6-7 (12-14), 6-4.

Ferrer beat Gasquet in last year's finale here.

The 2008 Tokyo champion will collect $135,000.



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