Loyzaga started as player-coach for YCO during the early 1960s. After retiring as a player in 1964, he became the head coach of YCO and the Manila Bank Golden Bankers in the MICAA; and the UST men's basketball team in the UAAP. He coached the Philippine men's basketball team that won the 1967 ABC Championship (now known as the FIBA Asia Championship). In the Philippine Basketball Association, he coached U/Tex (1975-1976) and Tanduay (1977-1979).[1]