Good ol prospect profiles always interesting to take a look at:
http://www.nfl.com/draft/profiles/washington_kelley
"ANALYSIS
Positives: Explosive breakaway threat with impressive leaping ability … Explodes coming off the line and uses his hands well to escape press coverage …
Has an array of moves to elude defenders and shows proper crack-block techniques upfield … Sharp route-runner who is especially effective on underneath passes and crossing patterns … Has good field awareness and is very conscious of the sideline markers … Separates quickly from the defender in the open, showing that second gear needed to gain yardage after the catch … Natural hand extender going up for the ball and shows fluid body adjustments coming back for the off-target tosses … Very tough and physical going for the ball in a crowd … His upfield acceleration consistently allows him to break tackles …
Gets in the defender's way when trying to block for the ground game.
Negatives: Concentration on the ball needs improvement, as he does not always get his head turned around properly to track the ball in flight … Hesitates at times when he can't escape the press at the line, seeming to give up when his initial move does not work … While he shows quickness in and out of his breaks, he will run sloppy routes late in the game (tends to run out of gas) … Rash of injuries (back, knee, head) are a concern. "
As for production, keep in mind:
Caldwell's first 4 seasons in league:
76 catches, 950 yards, 7 TD
Washington's first 4 seasons in league:
72 catches, 893 yards, 9 TD
Caldwell's season with Pats:
61 catches, 760 yards, 4 TD