Has an NPB (Japan) game ever ended 22-7?

Exactly once. On June 29, 1984, Chunichi Dragons beat Yokohama Taiyo Whales 22-7, and no NPB (Japan) game before or since has ended that way. When it happened it was a scorigami, the first 22-7 in league history.

Where 22-7 sits among nearby NPB (Japan) scores. Deeper blue means a score has happened more often; the outlined cell is the new one.

That makes 22-7 the 191st most common final score out of 223 that have ever occurred in NPB (Japan). One point away, 23-7 has happened never and 22-8 has happened 2 times.

Every 22-7 in NPB (Japan) history

Date	Result	Season
1984-06-29	Chunichi Dragons over Yokohama Taiyo Whales	1984

Open the NPB (Japan) grid at 22-7