King was an instant starter for the Tamaraws as resident power forward when Alberto "Big Boy" Reynoso retired at the end of the 1976 season. Reynoso's younger brother Cristino on the other hand was shipped to U/Tex in one of the early trades back in the PBA. Hence, King joined forces with Ramon Fernandez, Robert Jaworski, Francis Arnaiz and 1976 Rookie Of The Year Virgilio "Gil" Cortez in the starting unit of the Tamaraws (original starting forward Rodolfo "Ompong" Segura suffered a knee injury during the 1976 season that allowed Cortez to blossom that season). King became a major force to reckon with, and almost won ROY honors, barely losing to eventual winner and co-power forward Jimmy Taguines of Yco-Tanduay in a tight race. However, King proved that he had the sterner stuff and longevity as he stayed in the PBA for nearly 2 decades while Taguines retired unceremoniously sometime in the early 1980s.