Time catches up to us all, but when you're a footballer that inevitability can become somewhat brutal.
Suddenly the legs don't move as fast any more, the brain isn't quite as active and things that used to be so easy become so difficult.
It can be harrowing to watch, but these players keep on trying and keep on looking to recapture former glories.
It often just isn't there any more, though, and the results can be so disappointing.
Here are 25 players who are no longer at the top of their game.