Fairly frequently someone asks why the Colts would release Dallas Clark when he may have good years left. It's an easy answer and luckily Nate Dunlevy has already covered that ground:
One of the biggest surprises to fans this offseason is the fact that Dallas Clark is still without work. Many have wondered why he hasn't been picked up by anyone. There have been rumors from scouts that Clark has just hit the wall, and historically 32 years old is the end of productive play from a tight end.
In this case, catch rate can tell us a lot about Clark's current abilities.
Clark's catch rate has plummeted from the mid-70s for much of his career down to just 52 percent in 2011. Of course, there was a major change at quarterback for the Coltslast year that might have accounted for some of his decline.