Ohmachi played on the Japan Golf Tour, winning four times.

[1] He also played on the PGA Tour in 1987 and 1988, with a best finish of T-6 at the 1987 Houston Open.

[2] *Note: The 1986 Shizuoka Open was shortened to 63 holes due to weather.

PGA of Japan Tour playoff record (1–0)

This biographical article relating to golf in Japan is a stub.