No. 7 seed Sam Riffice, who grew up in the Sacramento suburb of Roseville, dominated Jack Lin of Canada 6-2, 6-1 in the boys 18s today to reach the round of 16 in the Eddie Herr International Championships in Bradenton, Fla.
Riffice, the boys 16 champion two years ago, trains at the USTA center in Boca Raton, Fla. He will face 12th-seeded Ergi Kirkin, a Turk who beat Stanford-bound Timothy Sah of San Diego 7-6 (4), 6-3.
Kirkin defeated Riffice 6-4, 7-6 (2) in the first round of the Eddie Herr 18s last year.
Meanwhile, Stefan Leustian of Mather in the Sacramento area reached the boys 14 quarterfinals with a 2-6, 6-4, 6-2 victory over Saud Alhogbani of Alexandria, Va. Leustian will meet top-seeded Bu Yunchaokete of China.
Fourth-seeded Spencer Brachman of Commack, N.Y., and Aidan Mayo, a former neighbor of Riffice's in Roseville, advanced to the boys 14 doubles quarterfinals.
In an all-San Francisco Bay Area girls 16 match, No. 7 seed Katie Volynets of Walnut Creek outplayed wild card Anna Campana of Hillsborough 6-4, 6-1 to reach the round of 16. Volynets will face unseeded Alexandra Mikhailuk of Canada.
Wild cards Campana and Petra Miszczak of Blaine, Wash., won in the first round of doubles. Third-seeded Volynets and Lauren Stein of Paradise Valley, Ariz., received a first-round bye.
USTA National 40 Hard Court Championships in La Jolla, Calif. -- No. 3 seed Fanny Gamble of San Rafael routed Cindi Juncal of San Clemente 6-0, 6-2 in the quarterfinals.
Gamble will play No. 1 seed Dina McBride, a two-time former tournament champion from Stevenson Ranch.
Four of the men's quarterfinalists are from Northern California: No. 4 seed and two-time former champion Oren Motevassel of San Jose, No. 6 and ex-champion Jeff Greenwald of San Anselmo, No. 8 Leon Bax of Mountain View and No. 13 Joshua Prager of Yuba City.
Bax topped No. 10 Daniel Hiddleson of Kentfield 0-6, 6-3, 6-1. Nicolas Chasseray of San Francisco lost to No. 5 Jesse Walter of Mercer Island, Wash., 6-2, 6-1.