Previous ranking: 14
Current ranking: 7
The skinny: Evans' 4.53 clocking in the 40-yard dash at the combine did nothing but help him move up draft boards, perhaps solidifying himself as the No. 2 receiver chosen in the draft after Clemson's Sammy Watkins. Some expected Florida State's Kelvin Benjamin to equate with Evans, and it didn't happen.
Previous ranking: 30
Current ranking: 14
The skinny: Donald showed speed and explosiveness at the combine the likes of which are rarely seen in a 285-pound defensive tackle, and drew comparisons to one of the NFL's top defensive linemen in Cincinnati's Geno Atkins. His 3-cone drill (7.11) and 40-yard dash (4.68) times ranked fourth and fifth, respectively, among all defensive linemen.
Previous ranking: 40
Current ranking: 19
The skinny: Beckham not only showed impressive speed (4.43) at the combine but was outstanding with his hands and route-running skills. His 3.94 20-yard shuttle time was third among all receivers. Beckham's 21-spot jump on Jeremiah's rankings was the biggest jump forward of any prospect.
Previous ranking: 28
The skinny: The Crimson Tide left tackle drops 15 spots after running the slowest 40-yard dash of the combine (5.59) amid reports of knee concerns. Fortunately for Kouandjio, the 40-yard dash isn't much of a predictor when it comes to offensive linemen. His 3-cone drill time, a better indicator, was a middling 7.71.
Previous ranking: 6
The skinny: Still considered by Jeremiah as a mid-first round value, it's not as if Jernigan's nine-spot drop was overly precipitous. Unless you are talking about the potential dollars involved: Last year's No. 6 pick (Barkevious Mingo) signed for $16 million. The No. 15 pick (Kenny Vaccaro) signed for less than $10 million. Jernigan ran a 5.06 40 at the combine, among the bottom half of the defensive linemen, but drew praise from NFL Network analyst Warren Sapp.
Previous ranking: 25
The skinny: Amaro ran the fifth-fastest 40 time among tight ends (4.74), although that was a far cry from the best (4.50, Tennessee State's A.C. Leonard), and some, including NFL Media analyst Mike Mayock, expected a better time. Jeremiah's drop for Amaro would represent the difference between a late-first round pick and an early second rounder.