After a deadlock in the first half, goals from Alexis Vega, Sebastian Cordova, Uriel Antuna and Eduardo Aguirre gave the Mexicans the perfect start to their Olympic journey.
France, without many of its biggest stars after their participation in Euro 2020, has found a goal thanks to André-Pierre Gignac but must now recover after a humiliating defeat in the opening match of Group A.
Meanwhile, in Group C, Spain were held in check by Egypt despite a wide range of attacking talent.
Unlike many teams at this year’s Olympics, Spain included members of the Euro 2020 squad who reached the semi-finals of the competition. Among them is teenage sensation Pedri as well as RB Leipzig star Dani Olmo.
However, he couldn’t find a way around a steadfast Egyptian defense.
Elsewhere, New Zealand beat South Korea 1-0 to take the lead in Group B and Cote d’Ivoire beat Saudi Arabia 2-1 in Group D.