Tonight’s match between No. 2 Monterrey and No. 7 Cruz Azul and No. 8 América will determine the first two Liga MX semifinalists. Puebla
The other two Final Four competitors will be determined by the results of a doubleheader on Sunday night that pits No. 6 Toluca against No. 3 Santos and No. 5 Tigres against No. 4 Pachuca.
After contentious decisions in three of the four first-leg matches, there will be a lot of focus on the referees this weekend.
The Cruz Azul-Monterrey game, the Toluca-Santos encounter (which featured penalties for both teams and a red card for Santos), and the Tigres-Pachuca game all received intense attention for calls and non-called (a controversial penalty in minute 88 earned Tigres the victory).