Hector Moreno and Raul Jimenez helped Mexico re-claim their three-point lead in CONCACAF World Cup qualifying with a 2-0 win away to El Salvador on Wednesday.
Moreno headed in Jesus Corona's 30th-minute corner before Mexico star Jimenez rounded out the win with a penalty in the third minute of stoppage time.
Hirving Lozano put an early chance wide, while Osvaldo Rodriguez also pushed a header off target before Moreno broke the deadlock with a glancing effort which crept in at the back post.
Both sides were then reduced to 10 men, with El Salvador losing Mario Jacobo to a straight red card for a foul on Rogelio Funes Mori in the 48th minute.
Mexico saw Nestor Araujo sent off with 23 minutes remaining for a second bookable offence, ruling him out of next month's crucial qualifier against the United States in Cincinnati.
Wolves' Jimenez cushioned the victory with his late spot-kick having returned to the national team last month after suffering a serious head injury in November last year.
The win moved unbeaten Mexico to 14 points after six games, three points ahead of USA, who came from behind to beat Costa Rica 2-1 earlier on Wednesday.