Has there ever been a 15–4 in the Liga MX?

Never.

It would be a scorigami. Based on the average number of goals in the Liga MX, the chance of a game ending 15–4 is about 1 in 135,741,779,869.

Nearby scores

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