NEWCASTLE – Tigres kept their unbeaten start to the Apertura season intact but were denied a home victory over Club America by a late equaliser.
The clash finished 2-2, meaning Tigres have drawn four of their opening five matches in the competition and stand fifth in the table.
Christian Benitez put Tigres ahead after 17 minutes, but an own goal from Patricio Trevino brought the teams level after 66 minutes and Hector Mancilla put the hosts in front with six minutes to play.
But there was a late twist as substitute Renato Gonzalez grabbed an 89th-minute leveller.
Monterrey missed out on the chance to go to the top of the table as they lost 1-0 away to San Luis, with the only goal coming from Christian Sanchez in the 19th minute.
Even a draw would have nudged Monterrey above Guadalajara and Unam Pumas, who each have 10 points from four games.
A point behind Monterrey, with eight points from five games, are Cruz Azul after a 1-1 draw at Jaguares.
Cruz Azul went ahead after six minutes with an own goal from Jesus Chavez, but Jaguares levelled through Ismael Fuentes in the 58th minute.
Toluca's unbeaten record - one win and three draws - came to an end as they lost 3-0 away to Pachuca, who led from the second minute thanks to Enrique Esqueda and added a second goal through Gerardo Rodriguez in the 33rd minute and a third from Mauro Cejas after 78 minutes.
ueretaro registered a 3-1 win away to Atlante, going ahead through Carlos Bueno in the 30th minute and responding well to conceding an equaliser from Giancarlo Maldonado two minutes before the hour mark.
Bueno added his second goal of the game in the 68th minute, and Ricardo Vazquez finished off bottom-of-the-table Atlante six minutes later.
Tecos also enjoyed a healthy away win, 2-0 at Atlas, with Duilio Davino making the breakthrough after 42 minutes and Eduardo Lillingston coming off the bench to add a second four minutes from the end.