I've written a lot this year about the young guns of the league. Readers love to know how their prospects rank and who's living up to the hype.
On the other side of the spectrum is a collection of players who might be playing on borrowed time. Not all of the following are about to retire, but it won't be long before they take a trip down Brett Favre Street.
The desire might be there, but their body says otherwise. Whether it is wear and tear or changes in the game, these players will soon be taking a crash course in broadcasting.
I give you the top 20 players headed for retirement in the not so distant future.