Karla Tellechea comments in the Futbol Mundial.com video what happened with teams like Cruz Azul, América, Tigres, Chivas Rayadas del Guadalajara in what was this matchday 1.
Mazatlán gave the surprise of matchday 1 in Liga MX

Cruz Azul, the new champion, suffered a tremendous stumble with Mazatlán FC who arrived as a victim, who also debuted as a technician without knowledge of Mexican football.
The visitor took advantage of the lack of some figures from Cruz Azul such as goalkeeper Jesús Corona. The goal of Mazatlán was made by the Chilean Nicolás García at 45 minutes.
Chivas was left to duty, suffered defeat against San Luis

Atlético San Luis visited the Akron Stadium and defeated the Chivas Rayadas del Guadalajara by a score of 1-2, giving a coup of authority in the MX League.
For Chivas and their coach Víctor Manuel Vucetich it was a return to reality for the rojiblanco team that looks like it would be out of the league.
America and Monterrey disappointed

While America, against Gallos Blancos, took an insipid 0-0 away at the La Corregidora stadium in Querétaro which showed a good tackle.
Rayados appeared with great fanfare, but tied with Puebla at the last minute, being a warning of possible disappointment in Liga MX.