Mike Lopez and Yok-Jing Ma both capped play in the California Boys Tennis Classic undefeated with two more wins on Saturday at Central High of Fresno.The sophomore tandem led Manteca High to a 2-3 record and a 10th-place finish out of a field of 16 in Division-V bracket. After claiming one of three matches in group play Friday, the Buffaloes defeated Oakmont (Roseville) and lost to Valley Christian (San Jose) in the battle for ninth.“Mike and Yok went 5-0, and I couldn’t have asked for more,” Manteca coach Frank Fontana said. “I wasn’t expecting that and there were some positive signs there.