Has there ever been a 15–1 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 15–1 is about 1 in 7,336,535,392.

Nearby scores

1. 16–0 Never
2. 16–1 Never
3. 16–2 Never
4. 15–0 Never
5. 15–1 Never
6. 15–2 Never
7. 14–0 3 times
8. 14–1 Never
9. 14–2 Never