Ball security issues (allows defenders to rip the ball out of his hands).
Needs to work on improving pass protection.
Shown uncertainty when sifting through blitzes in protection.
Better vision on the inside zone than as an outside runner.
Used infrequently as a pass catcher (meaning concern he has difficulty as a pass catcher, which most NFL teams also need a RB to be able to do).
Below average size for the NFL for the workload asked of him.
^Those were the weakness notes from some of the NFL scouting.
Titans should have taken him when they got the UF receiver! Callahan is worthless! Get a few more UT players that are as good as the others you have from other colleges to at least fill the stands!