I'd give it to Pepe without thinking twice.
But Eder deserves to be mentioned in this thread. So many times we speak of "delivering it when it matters" and this was the perfect example of it. A player everyone mocks, so lowly regarded to the point of his team playing without a CF even with all the problems that entails. Yet he's subbed into the final and did everything right. Won almost every ball thrown at him, won a few fouls, nearly scored a goal with a great header and then went on to win the tournament. After the 90' you could see Ronaldo hugging him and motivating him for the extra time, they knew they could count on him that day. He'll always be remembered, is now part of the history books in Portugal, and that wasn't due to being lucky or being in the right place at the right time. He fully deserved it today. It's among the most sensational of football stories for me.