Phil Foden has been challenged to show what he can do on the international stage by England boss Gareth Southgate.
Japan had the better of the first half, but Mexico raised their game after the break to secure victory in Graz.
The United States recovered to beat Panama 6-2 in Monday's friendly, with three players scoring their first international goals.
South Korea led 1-0 at half-time but Mexico produced a rapid treble as they ran out deserved winners in Saturday's friendly.
Alan Browne has had "no close contacts", according to the FAI, but played 90 minutes against England before testing positive.
Gareth Southgate left out a number of England's stars for a friendly meeting with the Republic of Ireland but was treated to a 3-0 win.
There was little to separate Wales and the United States in a low-key friendly at the Liberty Stadium that finished goalless.
Cristiano Ronaldo is closing in on Pele when it comes to goals scored for club and country and he has Gianluigi Buffon's backing.
Didier Deschamps discussed Marcus Thuram's France debut after losing to Finland.
Fernando Santos discussed his decision to start Cristiano Ronaldo on the bench for Portugal against Andorra.