Jason Rivers, NFL Combine Profiles

Dave Reardon profiles Jason Rivers, who's preparing for the NFL Combine, which starts this week.

Jason Rivers has the size, hands, physical toughness and the statistical body of work to get drafted by an NFL team.

But to move up at this week's combine in Indianapolis, Rivers needs to time well in the 40-yard sprint.

If the four-year starter at wide receiver for Hawaii can break 4.4 seconds, he climbs into near-elite status. But he will probably still be a notch below the top five or six draftable receivers, including Malcolm Kelly of Oklahoma, DeSean Jackson of California, Limas Sweed of Texas, Early Doucet of LSU and Mario Manningham of Michigan.

Still, it would separate Rivers from the rest of the pack. It would signify breakaway speed and perhaps allow him to shed the label of possession receiver.

"If he breaks into the 4.3s, that changes things," said Rivers' agent, Leo Goeas. "He's right at the brink, in the low 4.4s."

NFL.com also has profile pages of the four Warriors taking part in the combine. They have overviews, analysis and all except Rivers' page has a Q&A section (though that may change soon). Here are the links with some excerpts:

Colt Brennan

Analysis
Positives: Has a tall, lanky frame, with good upper-body structure, tapered thighs and room to carry additional bulk -- at least 20 pounds -- with no loss in quickness...Runs with a normal stride, showing the valid speed and balance to force defenses to account for him when running with the ball...Very mobile in the pocket, which causes problems for a slower defense to cover him on roll-outs...Slides and adjusts to pocket pressure with ease, showing the body control to easily throw on the move...Has good acceleration driving back from center to his throwing point...

Davone Bess

Short, but has a thick frame, especially in his lower body, to withstand the punishment of the NFL. ... Soft hands to pluck the ball. ... Good body control to adjust and make the difficult reception. ... Good quickness as a route-runner, but is even better after the catch, where he can make defenders miss in the open field.

Ryan Grice-Mullen-Mullins

Good initial quickness off the snap. ... Flashes burst out of his breaks. ... Generally reliable hands and shows the body control to adjust and make the difficult reception. ... Good lateral quickness to make defenders miss in the open field.

Jason Rivers

Good size for the position. ... Good initial quickness. ... Understands what the defense is trying to do and can find the open hole in the zone. ... Works his way back to the quarterback when he senses pressure. ... Catches the ball cleanly and shows the body control to adjust to poorly thrown passes. ... Uses his size to compete for jump balls and was a favorite target here in the red zone. ...