Has there ever been a 10–0 in MLS?

Never.

It would be a scorigami. Based on the average number of goals in MLS, the chance of a game ending 10–0 is about 1 in 308,981.

Nearby scores

1. 11–0 Never
2. 11–1 Never
3. 10–0 Never
4. 10–1 Never
5. 9–0 Never
6. 9–1 Never