So Roger Federer has won his third Wimbledon title. What now?
Well, five years ago we never thought Pete Sampras' incredible record of 14 Grand Slam career wins could ever be beaten - at least not this century.
But Federer is only 23 years old and the way he is going, I believe he has a chance.
Sampras won his last Wimbledon title at the age of 29, so Federer has a couple of years to chase that landmark and I'd say he is in a commanding position.
As for whether he can win all four Grand Slams in a year - he certainly has the talent and it is a real possibility.
If he stays healthy and motivated he could become the best but he has to play like he did against Andy Roddick on Sunday for the next five years.
The key is how he keeps his inspiration and motivation but I believe he is in the game for the right reasons.
He is not in it to chase the dollars - he is in it because he loves the game, he loves to play and he loves to win - and 21 finals unbeaten shows he relishes the big occasion.
It was clear to everyone how much overhauling Roddick, and the championship, meant to him when he cried as he took the title for a third time.
I'd compare him to Tiger Woods in golf - everyone has to adapt to Federer's level now
He cried like a little child winning his first big tournament and it was so nice to see.
This is a very successful and rich man and yet Wimbledon brought out all the emotions.
But that is also the sign of a true number one.
He lost in the semi-finals of the Australian and French Opens earlier this year and that hurt because being the best is about being measured in terms of the number of slams you win each year - not by how many other tournaments you win.
Quite rightly, Roger is going to take a couple of weeks off now and then he is going to concentrate more on the Grand Slams in future.
He is now playing against the history of the game, all the legends of the past.
Here at Wimbledon, he dropped just one set in the whole tournament and he is in a different class to everyone else.
I would compare him to Tiger Woods in golf. Everyone has to adapt to his level now - Roddick on the backhand, Lleyton Hewitt on the serve.
Federer is the bar and the bad news for the other players is he's just going to get better.
He has started to use his brain and imagination to play the game in the last couple of years but Roddick is still relying on pure power.
Roddick now needs to become smarter.
He also has time on his side and a lot of years to get better because he is still only 22.
But he has to watch what Federer does well and try to improve on that as soon as possible.
Boris Becker was talking to Sue Barker on BBC1.