Monterrey remain top but America's unexpected rise to No.2 and Chivas' free fall are the major stories from Liga MX Power Rankings Week 4.
Chivas lacking in rout at the hands of a Monterrey side who have "class and quality to spare." Plus, a bubble bursts and more from the Apertura.
Leon picked up their first win of the Apertura as they prevented Necaxa from taking top spot in Liga MX.
Erick Gutierrez broke the deadlock to give Pachuca their first win of the Apertura at Estadio Hildago.
Two late goals from Javier Guemez and Camilo Sanvezzo saw Queretaro take all three points against Monarcas de Morelia.
It's the fourth week of action in Liga MX's Apertura. Our writers look at some of the key storylines, topped by the allegations against Rafa Marquez.