Has there ever been a 15–9 in all competitions?

Never.

It would be a scorigami. Based on the average number of goals in all competitions, the chance of a game ending 15–9 is about 1 in 938,235,739,949,852.

Nearby scores

1. 16–8 Never
2. 16–9 Never
3. 16–10 Never
4. 15–8 Never
5. 15–9 Never
6. 15–10 Never
7. 14–8 Never
8. 14–9 Never
9. 14–10 Never