It's always a sad day, even if you can see it coming. The day a well-known NFL player hangs up his cleats is always a downer. Oftentimes, however, that day is preempted by years of visible decline in which fans and analysts wonder, sometimes out loud, when that player will decide he's had enough.
That moment is inevitable. Even with DeSean Jackson's speed, you can't outrun Father Time.
Some players make time catch them from behind, their attempts at ignoring age only going so far. Some spare themselves the pursuit and embrace it, ignoring the humiliation that comes with hanging on even a little bit too long.
Either way, for the following players, that moment is fast approaching. They've all had successful careers, but the glory can't last forever.