Has there ever been a 7–5 in the Liga MX?

Yes, 2 times.

The first time: February 17, 1946, Veracruz beat América (América 5–7 Veracruz).

The last time: March 16, 1980, Tampico beat Jalisco (Tampico 7–5 Jalisco), 46 years ago.

Home wins: 1. Away wins: 1.

Nearby scores

1. 8–4 Never
2. 8–5 Never
3. 8–6 Never
4. 7–4 1 time
5. 7–5 2 times
6. 7–6 Never
7. 6–4 17 times
8. 6–5 3 times
9. 6–6 1 time

All games

1. March 16, 1980 Tampico 7–5 Jalisco
2. February 17, 1946 América 5–7 Veracruz