For the first time in a long time, the big four all won games across Liga MX, and it all started with Club America at the Estadio Azteca.
Las Aguilas moved within three points of league leaders Monterrey thanks to a third straight victory as they beat Leon 2-1 at the Estadio Azteca on Saturday.
Las Aguilas took the lead after 34 minutes when Oribe Peralta benefited from a superb Rubens Sambueza through ball before beating William Yarbrough to send a simple finish into the empty net.
But the visitors equalized early in the second half when Elias Hernandez beat Hugo Gonzalez from close range after Maxi Moralez and Juan Cuevas had combined well.
In the 77th minute, Juan Ignacio Gonzalez conceded a penalty on Oribe Peralta. Andres "Rifle" Andrade stepped up and converted past Yarbrough to leave Ignacio Ambriz's side with maximum points. The result leaves Club America unbeaten at the Estadio Azteca in their last five games in all competitions
One team no longer unbeaten at home is Monterrey, after Chivas claimed their second victory of the season by shocking the league leader at the Estadio BBVA Bancomer.
The Rayados were unbeaten at home since the stadium's opening in 2015, but from the start, Chivas looked every inch like the better team and a side full of confidence.
The Rebaño Sagrado went ahead in the 14th minute when Carlos Alberto "Gullit" Peña headed home following a great play from Isaac Brizuela.
Monterrey, though, had their chances and equalized seconds from the break when Carlos Sanchez's cross found Hiram Mier who smashed home past Rodolfo Cota.
In the second half, Javier "Chofis" Lopez replaced Raul Lopez on the right wing and his impact was immediate. Only moments after stepping on the pitch, the 21-year-old weaved his way past several defenders before finishing behind Jonathan Orozco to give Chivas the lead.
Five minuets later, Chofis doubled for Chivas. Angel Zaldivar played a quick one-two with the winger before Chofis dribbled his way past one defender and fired home his second goal of the night.
Chivas were then left content to defend and see out a memorable away win at the league leaders.
The night only got better for Chivas fans when Atlas dropped their fourth straight Liga MX game as they were beaten 2-0 at home by Cruz Azul on Saturday.
Cruz Azul took the lead with their first shot of the game eight minutes in, with Jorge Benitez squaring up for the unmarked Christian "Chaco" Gimenez to poke home from the center of the box.
Benitez then turned scorer on 23 minutes when the former Olympiacos forward could not miss from close range, following a deflected cross from Joffre Guerron.
In the second half, the luckless Atlas could find no answer as they fell to their seventh game in 11 games under Gustavo Costas, leaving the Rojinegros 17th in the league table.
Finally, Pumas UNAM made it a perfect 4/4 after they secured their first win in five Liga MX matches by beating Monarcas Morelia 4-2 at Ciudad Universitaria.
The visitors took the lead after only four minutes when Jefferson Cuero fired home following some laxed defending from the Pumas defense.
However, an Erick Aguirre own goal made it 1-1 midway through the the first half, and after the break, Dante Lopez set up Daniel Emmanuel Ludueña to complete the comeback after 50 minutes.
A Fidel Martinez strike made it 3-1 three minutes later before Javier Cortes rounded off the scoring for the hosts with a delightful chip from a brilliant set-up from the Pumas midfield.
Monarcas Morelia was able to pull a goal back through Carlos Adrian Morales, but the goal came too little too late as Pumas earned all three points to remain unbeaten in their last eight league games, climbing within a point of a playoff spot.
Elsewhere, Xolos de Tijuana remain without a win at home after a goalless draw with Toluca. Hirving Lozano was brilliant as he scored a hat-trick to lead Pachuca to a 6-0 victory over Veracruz. Dorados kept their slim hopes of salvation alive after a 3-1 win over Santos Laguna. Tigres and Puebla closed the week with a dreadful 0-0 draw at the Estadio Cuauhtemoc.
Goal of the week: Javier Cortes