OUInsider - Owen Field

Every team is looking for a Gronkowki/Hernandez type of tight end ones that can get down the field and challenge the linebackers and dbacks to cover them. I think Hanna moved to the top of the list in this years draft.

from NFL draft ESPN:

Workout warrior emerges
Oklahoma TE James Hanna is the workout warrior of the combine so far. Hanna posted the fastest 40 time (official 4.49), tied for the best vertical (36 inches) and had the third-best broad jump (10-2) at his position. For comparison purposes, the top 40 among tight ends last year was 4.46 (Rob Housler, Cardinals) and the top vertical was 42.5 (Virgil Green, Broncos).

Don't be fooled by the numbers, though. Hanna has never played to his potential, shows stiffness in his movements and does not play to his timed speed. Teams will now go back and take a closer look at his game tape, but don't expect Hanna to suddenly skyrocket up draft boards based on this one workout.

In fact, Hanna's eventual draft slot (he currently carries a late-round grade) should serve as a prime example of how the evaluation process has evolved. Despite public perception, there are no Mike Mamula-like scenarios in the NFL draft these days, with players coming out of nowhere after out-of-this-world workouts. Very few teams still make the mistake of overestimating football potential based solely on workout times and measurements.

Looks like the 4.5 at OU was legit. I now agree with anybody who has said he wasn't used enough at OU.