Riffice reaches boys doubles quarters in French Open

   Sam Riffice and Gianni Ross, both 18-year-old Americans based in Orlando, Fla., have reached the boys doubles quarterfinals in the French Open.
   Riffice, who grew up in the Sacramento suburb of Roseville, and Ross edged Alan Fernando Rubio Fierros of Mexico and Duarte Vale of Portugal 4-6, 6-4 [10-5] today in a second-round battle of unseeded teams.
   Riffice and Ross will meet unseeded Axel Geller of Argentina and Nicolas Mejia of Colombia on Thursday. Geller and Mejia outclassed unseeded Artem Dubrivnyy of Russia and Marvin Moeller of Germany 6-3, 6-1.
   Ross also reached the singles quarterfinals, in which he will play third-seeded Alexei Popyrin of Australia. Riffice lost in the second round of singles to 12th-seeded Jurij Rodionov of Austria.
   Riffice has verbally committed to the University of Florida. He advanced to the singles final of $15,000 Futures tournaments on clay in Vero Beach, Fla., in April and Bucharest, Romania, last month to climb to No. 806 in the world.
   In 2014, Riffice joined Grigor Dimitrov as the only players to sweep the boys 16 singles titles in the Eddie Herr International Championships in Bradenton, Fla., and the Orange Bowl in Plantation, Fla.
   Dimitrov, 26, is ranked 13th after reaching a career-high No. 8 in 2014.