Has an NPB (Japan) game ever ended 26-0?

Exactly once. On March 27, 2005, Chiba Lotte Marines beat Tohoku Rakuten Golden Eagles 26-0, and no NPB (Japan) game before or since has ended that way. When it happened it was a scorigami, the first 26-0 in league history.

Where 26-0 sits among nearby NPB (Japan) scores. Deeper blue means a score has happened more often; the outlined cell is the new one.

That makes 26-0 the 191st most common final score out of 223 that have ever occurred in NPB (Japan). One point away, 27-0 has happened never and 26-1 has happened never.

Every 26-0 in NPB (Japan) history

Date	Result	Season
2005-03-27	Chiba Lotte Marines over Tohoku Rakuten Golden Eagles	2005

Open the NPB (Japan) grid at 26-0