MEXICO CITY, Sept 14 (Reuters) - Toluca lost their unbeaten run in the Mexican Apertura championship when they went down to a 1-0 defeat at San Luis.
Defender Oscar Mascorro drilled home a rebound following a corner in the 43rd minute of Wednesday night's game to send the Red Devils, coached by Argentina 1978 World Cup winner Americo Gallego, to their first defeat in eight games.
Toluca stayed top of Group Three with 17 points while San Luis, beaten finalists in the previous championship, top Group Two with 13.
America came from behind to defeat titleholders Pachuca 3-1 in the other top match played on Wednesday thanks to two late goals from Argentine forward Matias Vuoso.
Argentine-born midfielder Gabriel Caballero fired home for Pachuca in the 16th minute at the Azteca stadium and they led until the hour, when Juan Carlos Mosqueda levelled.
America are second in Group Three with 14 points while Pachuca are struggling in fifth place in Group Two with only seven.
Atlas continued to upstage their larger neighbours Guadalajara as they beat Veracruz 3-1 to stay top of Group One.
Two goals from Argentine Emmanuel Villa put Atlas in control before Colombian striker Hugo Rodallega made it 3-0 in the 65th minute.
Alejandro Leyva replied for the Red Sharks, who were playing their second match under new coach Pedro Monzon.
Guadalajara, meanwhile, continued their indifferent form with a 1-1 draw -- their third draw in eight games -- at Queretaro to stay fourth in Group One with 12 points.
Santos Laguna, the only team without a win, continued their miserable run despite changing coach. They went down 3-2 to fellow strugglers Morelia in their first game under Daniel Guzman.