Monterrey missed the chance to pull clear at the top of the Mexican Liga MX as its game against Guadalajara was abandoned.
Carlos Barra's men started out level with Club America but ended the day a point adrift as its match with Guadalajara was washed out after 16 minutes.
America drew 0-0 at Club Universidad de Guadalajara.
Morelia remains bottom without a win after a 1-1 draw at Chiapas FC.
Javier Mustafa put Chiapas ahead (2) but David Depetris got battling Morelia a point (47).
Pachuca and Tijuana played out a 1-1 draw, with Hirving Lozano and Alfredo trading goals inside 18 minutes.
The day's other game saw Unam Pumas draw 2-2 at home to Tigres Monterrey.
Pumas was clear at the break thanks to Dante Lopez and Ismael Sosa, but was pegged back by Duenas Manzo and Juninho's 87th-minute penalty.
Santos Laguna beat nine-man Leon 2-0 to edge closer to America.
Antonio Mohamed's America sits top with 17 points but has now failed to win any of its last three Apertura games and extends its goalless run to 265 minutes.
After Mauro Cejas' 10th-minute opener, Leon's task was made even tougher as Fernando Navarro received his second yellow card just before the half-hour mark.
Jose Maria Cardenas followed his team-mate's example 14 minutes from the end as he also saw red, and Jesus Escoboza wrapped up the win late on, squeezing a controlled effort past Christian Martinez in the visitors' goal.
Atlas would have gone level with America on 17 points with a win at Veracruz on Sunday (AEST).
However, Luis Caballero's 47th-minute goal was only enough to secure a draw, cancelling out Carlos Ochoa's first-half opener.
Queretaro had grabbed the headlines in the build-up to their meeting with Puebla on Sunday (AEST), following on from its signing for former Ballon d'Or and World Cup winner Ronaldinho.
The Brazilian was not able to make his debut, but supporters were treated to dramatic scenes nonetheless, with Camilo Sanvezzo putting the host ahead in the 89th minute, despite Miguel Angel Martinez receiving a harsh red just after half-time.
Mexico legend Cuauhtemoc Blanco played a role in Martinez's sending off and the 41-year-old netted Puebla's equaliser in the seventh minute of stoppage time, smashing home a penalty.
Cruz Azul's unimpressive Apertura form continued as it was beaten 2-1 at home by Toluca, with the host having goalkeeper Jose Corona sent off at the death.