Has an NPB (Japan) game ever ended 15-12?

Exactly once. On September 22, 1995, Yokohama BayStars beat Hiroshima Toyo Carp 15-12, and no NPB (Japan) game before or since has ended that way. When it happened it was a scorigami, the first 15-12 in league history.

Where 15-12 sits among nearby NPB (Japan) scores. Deeper blue means a score has happened more often; the outlined cell is the new one.

That makes 15-12 the 191st most common final score out of 223 that have ever occurred in NPB (Japan). One point away, 16-12 has happened 4 times and 15-13 has happened never.

Every 15-12 in NPB (Japan) history

Date	Result	Season
1995-09-22	Yokohama BayStars over Hiroshima Toyo Carp	1995

Open the NPB (Japan) grid at 15-12