Portugal forward Cristiano Ronaldo was forced off with a knee injury midway through the first half of the Euro 2016 final against France on Sunday.
Ronaldo was hurt by an early crunching tackle from Dimitri Payet which was not punished as a foul.
He tried to run off the knock but after several attempts, the tearful former world footballer of the year signalled to the bench and was carried off on a stretcher.
It was a cruel blow for the 31-year-old Portugal captain, who had been desperate to lead his side to their first major title.
His departure also meant he was deprived of the chance to become the all-time top scorer at European Championships having equalled Michel Platini's tally of nine goals with a thumping header in the 2-0 semi-final win over Wales.
"Terrible to see Cris come off like that. Hope it's nothing too bad," tweeted Wales forward Gareth Bale, his team-mate at club side Real Madrid.
Ronaldo's previous appearance in a Euro final also ended in personal sadness as hosts Portugal lost the 2004 showpiece to Greece.