Has there ever been a 11–8 in the Brasileirão?

Never.

It would be a scorigami. Based on the average number of goals in the Brasileirão, the chance of a game ending 11–8 is about 1 in 203,169,912,489.

Nearby scores

1. 12–7 Never
2. 12–8 Never
3. 12–9 Never
4. 11–7 Never
5. 11–8 Never
6. 11–9 Never
7. 10–7 Never
8. 10–8 Never
9. 10–9 Never