The superlíderes took the lead early on. Javier Salas stopped an attack by Rogelio Funes Mori, but then lost the ball to Dorlan Pabón. He returned the ball to Funes Mori, who made it 0-1 for Monterrey in the 4th minute.
In the 16th minute, the Rayados made it 0-2. Jonathan González played in Avilés Hurtado, who assisted Funes Mori as he scored his second of the night.
Monterrey looked completely in control, but bit by bit Atlas began to get into the game. In the 34th minute, Cristian Tabó scored a golazo to reduce the deficit to 1-2 and inspire the Rojinegros with thoughts of a comeback.
Atlas came close to tying the game in the 52nd minute, when Juan Pablo Vigón sent the ball in for Brayan Garnica, but his attempt was cleared off the line by Leonel Vangioni.
Atlas had more of the possession in the second half, but they were unable to make it count, while Monterrey looked to run up the score with counterattacks. In the end, however, the halftime score held until the final whistle.
With the 1-2 win, Monterrey will advance with a win or draw in the second leg, as well as a 0-1 or 1-2 loss (due to the away goals and higher seed tiebreakers, respectively). Atlas would need to either win while scoring at least three goals, or, if they keep Monterrey off the board, win 2-0.
Atlas: Miguel Ángel Fraga, Jaine Barreiro, Rafael Márquez, Daniel Arreola, Luis Reyes, José Madueña (Cristian González 89′), Javier Salas (Ravel Mrrison 45′), Brayan Garnica, Juan Pablo Vigón (Matías Alustiza 74′), Christian Tabó, Milton Caraglio.
Monterrey: Hugo González, Nicolás Sánchez, Leonel Vangioni, John Stefan Medina (Efraín Juárez 45′), Celso Ortiz (Arturo González 83′), Jesús Molina, Jonathan González, Carlos Sánchez, Rogelio Funes Mori, Dorlan Pabón (Jesús Zavala 80′), Avilés Hurtado.