France underlined their Euro 2020 favourite tags with a 1-0 win over Germany in Munich, while holders Portugal opened their Group F campaign with a 3-0 win against Hungary in Budapest.
The tournament's so-called 'group of death' saw the two former world champions go head-to-head on Tuesday night.
A first-half own goal from Mats Hummels proved enough for a hard-earned France win, with Kylian Mbappe and Karim Benzema both seeing efforts ruled out for offside at the Allianz Arena.
Defending champions Portugal, meanwhile, eventually got the better of Hungary after a late double by Cristiano Ronaldo helped silence the majority of the home fans at a full-capacity Puskas Arena.
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Portugal forward Ronaldo became the first player to appear in five European Championship finals when he led the team out against Hungary – having made his debut against Greece at Euro 2004. Not content with that new benchmark, Ronaldo's late double then also saw him crowned the tournament's all-time top scorer with 11 goals.
Up next
June 16
Finland vs Russia (Group B, St Petersburg, 1400)
Turkey v Wales (Group A, Baku, 1700)
Italy vs Switzerland (Group A, Rome, 2000)