Mexico, behind a first-half goal from Hirving Lozano, upset reigning champs Germany in the group stage opener, 1-0. The only time it advanced further was in 1970 and 1986, when Mexico hosted and lost in the quarterfinals - the latter to Germany on penalty kicks.
The Germans played a flawless qualification winning all 10 games, conceding just four goals in the process, and also clinched the Confederations Cup previous year.
Mexico will be proud after beating Germany for the first time in the World Cup after getting it third time lucky following two previous losses in 1962 and 1978.
Mexico probably would've been dreading the thought of facing Germany again.
With Brazil conceding on 10 goals from the last 12 shots on target they've faced at the World Cup, you wonder if goalkeeper Alisson regrets choosing to represent the Selecao over Iceland. It hadn't lost an opening game since 1982.
"Germany have to return to what they were doing before".
That defeat in Sochi was one that hurt their ego. But a lot has changed since then and Mexico is now all pumped up under the marvelous coach Juan Carlos Osorio. They were desperate to prove to the footballing world that they are one of the top teams in the world.
However, on Sunday at the Luzhnki Stadium, it was pretty evident that Osorio and Mexico had learnt from those humblings.
He said: "Of course, everybody is really unhappy and crestfallen, but tomorrow we have to look forward".
Germany 'under pressure' after Mexico defeat Kroos
But what can be said for Germany - they seemed hesitant, shaky and somewhat unconvincing in the defence of their World Cup title. Mexico shocked the soccer world Sunday when it defeated defending champions Germany in a stunning World Cup opener.
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The Mexicans pressed Germany but didn't overcommit. Bastian Schweinsteiger's retirement had left a gaping hole in the middle, one that was always going to be hard for one man to fill. More reliance was on speed and movement on the counterattack.
The likes of Julian Draxler, Timo Werner and Joshua Kimmich are new faces, but there is still the same core.
They played a high line against the pacy quartet of Javier Hernandez, Lozano, Carlos Vela and Miguel Layun. But Low and thousands of German fans at Luzhniki Stadium witnessed a worn-out Sami Khedira, Mesut Ozil and Thomas Muller amid the Germans' dismal performance. Mexico were aggressive off the ball, pressing and hounding the Germans, who were often ponderous in possession.
Hirving Lozano stunned Germany as he broke the deadlock in Mexico's opening match in Russian Federation against Joachim Low's lacklustre side on Sunday afternoon.
Ozil, 29, endured an inconsistent season for Arsenal, but such is his brilliance at worldwide level, that the playmaker's position in the national side has never really been under threat.
According to ESPN, Low had been unhappy regarding Ozil and Ilkay Gundogan's meeting with Turkish president Recep Tayyip Erdogan, which sparked a huge divide in Germany, though Ozil makes the cut, while Gundogan has had to settle for a place on the bench.
Germany nearly responded immediately, as Kimmich won a free-kick at the top of the box that Kroos curled on target only to see Ochoa tip it onto the bar.
"To start off on the right foot against the best team in the world, it's a huge result and great work from the team".
On the hour mark, Loew sent Marco Reus on for his major tournament appearance with Germany. Otherwise, the Mexican were throwing their bodies at every German attempt. Mexico were relentless at the back, however, and broke downfield on many occasions without success. The equaliser never came.