Has an NPB (Japan) game ever ended 23-2?

Exactly once. On June 11, 2009, Chiba Lotte Marines beat Hiroshima Toyo Carp 23-2, and no NPB (Japan) game before or since has ended that way. When it happened it was a scorigami, the first 23-2 in league history.

Where 23-2 sits among nearby NPB (Japan) scores. Deeper blue means a score has happened more often; the outlined cell is the new one.

That makes 23-2 the 191st most common final score out of 223 that have ever occurred in NPB (Japan). One point away, 24-2 has happened never and 23-3 has happened never.

Every 23-2 in NPB (Japan) history

Date	Result	Season
2009-06-11	Chiba Lotte Marines over Hiroshima Toyo Carp	2009

Open the NPB (Japan) grid at 23-2