Has there ever been a 8–2 in the Liga MX?

Yes, 11 times.

The first time: January 16, 1944, España beat ADO (ADO 2–8 España).

The last time: December 11, 1994, América beat Querétaro (Querétaro 2–8 América), 31 years ago.

Home wins: 7. Away wins: 4.

Nearby scores

1. 9–1 1 time
2. 9–2 6 times
3. 9–3 2 times
4. 8–1 5 times
5. 8–2 11 times
6. 8–3 1 time
7. 7–1 22 times
8. 7–2 17 times
9. 7–3 7 times

All games

1. December 11, 1994 Querétaro 2–8 América
2. February 9, 1994 Toros Hidalgo 2–8 Cruz Azul
3. October 15, 1988 Leones Negros UdeG 2–8 Atlas
4. May 7, 1977 Jalisco 8–2 Veracruz
5. October 25, 1959 Zacatepec 8–2 Zamora
6. June 26, 1949 Asturias 8–2 América
7. September 26, 1948 Atlas 8–2 León
8. April 28, 1946 Oro 8–2 San Sebastián
9. September 3, 1944 Guadalajara 8–2 Atlante
10. March 2, 1944 España 8–2 Guadalajara
11. January 16, 1944 ADO 2–8 España