Mayos survive three-setters in Jr. Orange Bowl

   Brothers Keenan and Aidan Mayo have been on parallel paths in the Junior Orange Bowl.
   Both Mayos, from the Sacramento suburb of Roseville, lost a set for the first time in this year's tournament but reached the quarterfinals in their respective age groups in Coral Gables, Fla.
   Keenan, seeded third in the boys 14s, wore down 17th-seeded Daniel Michalski of Poland 6-4, 6-7 (2), 6-1.
   Keenan, already 6-foot-2 (1.88 meters), is ranked first in the United States in the 14s. He won the USTA National Clay Court Championships in Fort Lauderdale, Fla., in July.
   Aidan, seeded ninth in the boys 12s, held off unseeded Juan Zabala Vargas of Ecuador 4-6, 6-1, 6-3. Mayo is ranked third nationally in the 12s.
   Keenan will face unseeded Chen-jui Ho of Taiwan today, and Aidan will play Sweden's Ross Weibull, also seeded ninth.
   The Mayos train at the USTA center in Carson in the Los Angeles area.