If Roger Federer loses the point, it's 6-6 in the fourth-set tiebreak. He would have wasted three match points and guaranteed that Novak Djokovic would have had a chance to serve again, possibly to win the fourth set and send the match to a decisive fifth set that would have been played Saturday afternoon because of the growing darkness in Paris. If he wins the point, he pulls off one of the most stirring victories of his career, ending Novak Djokovic's 43-match winning streak and denying him the chance to be No. 1 in the world. In doing so, Federer sends a warning shot to the tennis world that although he's no longer the player he was, he still belongs in the conversation with Djokovic and Rafael Nadal, a conversation he'd only recently been left out of.
Just like that, Roger Federer was in the finals of the French Open. He'll face Rafael Nadal on Sunday.