When Vintage Federer does show, it's magic. Even if he's a little late like at the US Open quarter-finals against Gael Monfils when he came back from two sets down and two match points to beat the Frenchman in five.
And amazingly sometimes Vintage Federer shows up but still loses, like the Wimbledon final against Novak Djokovic - the best tennis match of 2014.
It was at Centre court at Wimbledon - where Federer had already won seven Wimbledon titles - but also the same place he lost one of the greatest ever finals to Rafael Nadal in an epic five-setter.
Six years later and the man with so many great memories on the grass at The Championships was on the losing end of another great match.
Four minutes short of four hours it was a classic topsy-turvy final. Federer won the first, Djokovic the second and third before Federer took the fourth - after being down 5-2.
Read that again - down 5-2 in the fourth and he set up a deciding fifth set. Momentum shifted more often than the pendulum in a grandfather clock.
Eventually though, the fourth set took too much out of Federer and Vintage Djokovic, the number one in the world for a reason, closed out the match for his second Wimbledon title. 6-7, 6-4, 7-6, 5-7, 6-4. Vintage stuff.