Javier Hernandez scored his 50th global goal to help Mexico take a big step towards the last 16 of the World Cup with an impressive win over South Korea, despite Son Heung-min's stunning late strike.
In their last ever meeting Mexico thrashed the South Koreans 4-0 in friendly played between the teams in 2014 while the last ever competitive match between them in the 2001 Confederations Cup ended with a 2-1 victory to the Asian side.
Hernandez became the first Mexican player to score 50 goals for his country, after 104 appearances, with Vela earlier opening the scoring through yet another penalty kick.
ESPN's Tom Marshall discusses why Mexico must refocus after their Germany win to beat South Korea. Ki suffered a left calf injury during the match against Mexico and will not be available for South Korea's duel against Germany. Midfielders Giovani dos Santos and his younger brother Jonathan dos Santos play for the Galaxy and forward Carlos Vela for LAFC.
Against Germany, they managed five including one which led to their goal, and alone would see them still above the next highest team Belgium, who have recorded four fast breaks in their two games.
The criticism of Mexico's national team heading into the World Cup was loud and scathing. "We are going to enjoy it", Hernandez said.
"We came to Russian Federation with a lot of criticism but we're working hard and have a lot of talent", he said. Germany (no points) face Sweden (three) later on Saturday.
South Korean forward Son Heung-min scored a scintillating consolation goal in injury time but it was too little too late for the East Asian nation, which now can not qualify for the first knockout stage of the tournament.
The win puts Mexico in the driver's seat heading into their final match in the Group Stage. It's not breaking the equator, this tournament has already surpassed the Brazilian 2014 world Cup according to the number appointed 11-metre blows (14 vs 13).
But just as those opportunities appeared to grow South Korea's confidence, it was shattered when a stray arm from Jang Hyun-soo resulted in Vela breaking the deadlock from the spot after 25 minutes.