CABUYAO and Rizal Technological University dominated their rivals at the start of the National 19-and-under softball championship at the Sto. Niño Softball Field in Marikina City.
RTU outclassed Binangonan, 18-3, while Cabuyao City defeated La Salle Antipolo, 13-5.
Also seeing action in the six-day tournament are Pasig, San Rafael-Bulacan and Agoncillo-Batangas.
Day Two of the tournament will see RTU playing back-to-back games against La Salle Antipolo and Agoncillo-Batangas.
San Rafael-Bulacan takes Binangonan, while Pasig battles Agoncillo-Batangas and Binangonan in successive matches in the tournament presented by Cebuana Lhuillier and sanctioned by the Amateur Softball Association of the Philippines.