Masaji Hiramatsu (平松 政次, Hiramatsu Masaji, born September 19, 1947) is a Japanese former professional baseball pitcher in Nippon Professional Baseball (NPB).

He played for the Taiyo Whales / Yokohama Taiyo Whales from 1967 to 1984.

[1] He won the Eiji Sawamura Award in 1970.

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