Has an MLB game ever ended 29-9?

Exactly once. On September 9, 2020, Atlanta Braves beat Miami Marlins 29-9, and no MLB game before or since has ended that way. When it happened it was a scorigami, the first 29-9 in league history.

Where 29-9 sits among nearby MLB scores. Deeper blue means a score has happened more often; the outlined cell is the new one.

That makes 29-9 the 278th most common final score out of 330 that have ever occurred in MLB. One point away, 30-9 has happened never and 29-10 has happened never.

Every 29-9 in MLB history

Date	Result	Season
2020-09-09	Atlanta Braves over Miami Marlins	2020

Open the MLB grid at 29-9