Has there ever been a 9–9 in the Primeira Liga?

Never.

It would be a scorigami. Based on the average number of goals in the Primeira Liga, the chance of a game ending 9–9 is about 1 in 29,655,331,847.

Nearby scores

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