沢村栄治賞
A right-handed pitcher, Koyama threw hard and was known for his effective slider and pinpoint control. He ranks third all-time in the NPB in wins (320), strikeouts (3,159), innings pitched (4,899), and shutouts (74). He won 20 or more games 7 separate times, was selected to eleven All-Star teams, and won the 1962 Eiji Sawamura Award.