Complex sentence: He played college ball for the San Sebastian Stags, where he won a championship in 1973, before moving on to play basketball for the Tanduay Rhum Masters of the Philippine Basketball Association from 1977 to 1978.
Split into simpler sentences: He played college basketball for the San Sebastian Stags, where he won a championship in 1973. He then moved on to play professionally for the Tanduay Rhum Masters of the Philippine Basketball Association from 1977 to 1978.