Lache Seastrunk, RB, Baylor
A former Oregon transfer, Seastrunk quickly established himself as one of the best big-play threats in the Big 12 the past two years. Thanks to Baylor's wide-open offense, he had plenty of initial room to work on draws and inside runs and took advantage by routinely producing big plays and exploiting defenses. I expect him to run in the 4.4s.
Damien Williams, RB, Oklahoma
Williams was dismissed from Oklahoma in late November for a violation of team rules. Despite that, his big-play ability is impressive on film, particularly the way he gets to his top speed as soon as he hits the open field. It's tough to tell if he'll run fast or if he's just an initial burst-type runner, but I expect him to run in the 4.4s no matter what. For him, the interview process is far more important.
George Atkinson III, RB, Notre Dame
Atkinson was a surprise (and a bit frustrating) of an early entrant because he's yet to reach his full potential after flashes during this past season. However, based on his high school track experience (he was one of the best runners in the state of California during high school), he'll be one of the fastest runners at the combine and could end up as a late draft pick based on speed alone.
Odell Beckham Jr., WR, LSU
One of the best overall athletes in the draft, Beckham should leave the combine as one of the true "winners" and further separate himself from the rest of the pack when it comes to receivers after Sammy Watkins. Because he's a bit long, he may not run under 4.4. Still, his numbers across the board should rank among the best receivers.
Jalen Saunders, WR, Oklahoma
This year's Tavon Austin-like player, Saunders needs a creative offensive coordinator and an offense that gives him plenty of room to work. There's a home for him in the NFL as a speedy slot receiver and a return threat. He just missed the cut in the top five on this list, as I think he could run in the 4.3s.
Sammy Watkins, WR, Clemson
One of the best playmakers in the country, Watkins is all but guaranteed to be a top-10 pick and could end up going as high as second overall, so his combine numbers likely won't hurt or help him all that much. But I fully expect him to run in the 4.4s, with the outside shot he ends up as one of the combine's fastest players.
Chris Davis, CB, Auburn
Davis' NFL position is still to be determined, but he's likely to be a kick returner primarily and a nickel/dime cornerback with time. But as far as speed is concerned, just ask Alabama fans how fast he can run in the open field.
Loucheiz Purifoy, CB, Florida
One of the better talents at cornerback in the class, Purifoy declared early for the draft despite not being fully developed as a defensive back. Still, his talent and upside as a future NFL starter are there to work with, and he'll likely test well in a variety of drills, including the 40-yard dash.