Netherlands youngster Arnaut Groeneveld secured a 1-1 draw with Belgium, while Denmark beat Austria and Sweden drew with Slovakia.
Updates on the Nations League and more on a night with Belgium, Netherlands, Brazil, Argentina, Denmark and Sweden all in action.
It is rivals day in the UEFA Nations League on Tuesday, as Germany and France plus Republic of Ireland and Wales go head to head.
Jose Mourinho watched Serbia win, while Bernardo Silva helped Portugal to victory.
Portugal and Scotland are in action as the UEFA Nations League returns on Thursday, while Wales, Spain and France play friendlies.
Portugal, without talisman Cristiano Ronaldo, beat Italy 1-0 in the UEFA Nations League on Monday, while Turkey stunned Sweden.
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