Has there ever been a 9–5 in the La Liga?

Yes, 1 time.

The only time: February 5, 1933, Athletic Bilbao beat Racing Santander (Athletic Bilbao 9–5 Racing Santander).

Nearby scores

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