Nations League holders Portugal made light of Cristiano Ronaldo's injury absence as they swept aside Croatia 4-1 in their opener in the competition on Saturday.
European champions Portugal, in impressive form on their return to action after a 10-month new coronavirus hiatus, hit the woodwork three times before Joao Cancelo fired them ahead four minutes before halftime in the League A Group Three match.
Diogo Jota and Joao Felix both scored their first international goals in the second half before Bruno Petkovic pulled one back and Andre Silva then added a fourth.
Ronaldo, who is on 99 international goals, was ruled out with a toe infection while Croatia were missing key midfielders Luka Modric and Ivan Rakitic after their federation agreed not to pick them before the start of the European club season.
Meanwhile, a slice of luck and a moment of individual brilliance during a mazy run from Kylian Mbappe gave World Champions France a gritty 1-0 win away to Sweden in their Group 3 clash.
Les Bleus coach Didier Deschamps tried a new 3-4-1-2 system but the Swedes, promoted to the competition's top tier after their group victory last year, frustrated the world champions for the first 40 minutes until Mbappe proved to be the difference.
The 21-year-old Paris St Germain striker got a fortunate bounce off a defender's legs as he danced through the right side of the Swedish defence before beating goalkeeper Robin Olsen from a very tight angle at his near post.
With the clock ticking towards 90 minutes, Sweden winger Emil Forsberg forced a fine save from Hugo Lloris and Marcus Berg thumped a shot that was deflected wide for a corner that the hosts could not capitalise on as France held firm.
Belgium enjoyed a comfortable 2-0 win away to Denmark thanks to a goal in each half from Jason Denayer and Dries Mertens in their Group 2 clash.
Kasper Hjulmand's reign as Denmark coach got off to a bad start when Jason Denayer put the visitors ahead in the ninth minute after losing his marker to score from close range off Dries Mertens' corner.
The home side pressed high up the pitch and captain Simon Kjaer did a good job of shackling Belgium's target man Romelu Lukaku but, despite decent chances for Martin Braithwaite and Christian Eriksen, they struggled to get many shots on target.
The Belgians took over in the second half, with substitute Dennis Praet snapping up the ball form an attempted clearance and forcing a smart save from Kasper Schmeichel.
There was little Schmeichel could do in the 77th minute, however, after he parried a shot from Youri Tielemans and Mertens reacted quickest to slam the ball home and double the advantage as Belgium coasted to victory.
While Raheem Sterling's late penalty helped England past Iceland.
In League C, there were wins for North Macedonia, Luxembourg, Montenegro and Georgia, while Gibraltar beat San Marino in League D.
It was a first victory for the Rock since October 2018.
