The defending champions were the first to score but were gradually utterly overpowered by their hosts at the Allianz Arena.
Portugal suffered a 4-2 defeat against Germany in their second Euro 2020 outing, setting an unwanted record in the process.
The embarrassing loss was the first time that Portugal conceded four goals in the European Championships.
Additionally, never before a title-defending team had let in four goals in a single match in the history of the competition.
Cristiano Ronaldo, as he so often does, was able to leave some impression on the match as he played a part in both his side’s goals. The Juventus forward took his tally for the tournament up to three goals with a close-range finish before helping Diogo Jota get on the scoresheet with an acrobatic assist.
Ronaldo was let down by his defenders. A Selecao’s backline was leaky while Ruben Dias and Raphael Guerreiro directly contributed to their demise by scoring own goals.
Portugal now find themselves in third place in Group F, and anything less a win against France on Wednesday could present dire consequences.