He has won six times on the Japan Golf Tour.

He represented Japan at the 2007 Omega Mission Hills World Cup with Hideto Tanihara.

1Co-sanctioned by the Asian Tour 1Co-sanctioned by the Japan Golf Tour Asian Tour playoff record (1–0) CUT = missed the half-way cut "T" = tied Note: Hiratsuka never played in the Masters Tournament or the U.S. Open.

"T" = Tied Note that the HSBC Champions did not become a WGC event until 2009.

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