Bellis gains Orange Bowl quarters; Gordon falls

  CiCi Bellis and Michaela Gordon, 15-year-old residents of the San Francisco Bay Area, both faced qualifiers in the third round of the girls 18s at the Orange Bowl on Thursday.
   Only Bellis won, though.
   Atherton's Bellis, seeded second, defeated Maria Shishkina, a native of Kazakhstan living in Bradenton, Fla., 7-6 (7), 6-1 on clay in Plantation, Fla. The unseeded Gordon, from Saratoga, lost to Kayla Day of Santa Barbara 3-6, 6-1, 7-5.
   Bellis, the second-ranked junior in the world, is scheduled to face unseeded Caroline Dolehide, 16, of Hinsdale, Ill., for the first time in today's quarterfinals. Dolehide breezed past Dasha Ivanova of Beaverton, Ore., 6-1, 6-1.
   Meanwhile, second-seeded Stefan Kozlov, a 16-year-old sensation from Pembroke Pines, Fla., coasted into the boys 18 quarters.
   Second-seeded Sam Riffice of Roseville in the Sacramento area advanced to the boys 16 semifinals, extending his winning streak to 10 matches with a 6-1, 6-0 victory over unseeded Victor Krustev of Canada.
   The 15-year-old Riffice, who trains at the USTA center in Boca Raton, Fla., won last week's Eddie Herr International Championships on hardcourts in Bradenton.
   Riffice will meet 12th-seeded Nathan Perrone of Mount Laurel, N.J. Riffice leads the head-to-head series 2-0, with both matches coming this year on hardcourts.
   In girls 18 doubles, top-seeded Bellis and Marketa Vondrousova of the Czech Republic eked out a 3-6, 6-3 [10-8] victory over Raquel Pedraza of Claremont in the Los Angeles area and Charlotte Robillard-Millette of Canada to reach the quarterfinals.
   Brothers Dominic and Paul Barretto of Bel Tiburon in the Bay Area lost a heartbreaker to Basil Khuma of India and Christian Lakoseljac of Canada, 4-6, 6-0 [10-8] in the boys 16 semifinals.