Has there ever been a 9–3 in MLS?

Never.

It would be a scorigami. Based on the average number of goals in MLS, the chance of a game ending 9–3 is about 1 in 163,430.

Nearby scores

1. 10–2 Never
2. 10–3 Never
3. 10–4 Never
4. 9–2 Never
5. 9–3 Never
6. 9–4 Never
7. 8–2 Never
8. 8–3 Never
9. 8–4 Never