Nine underclassmen on Big Board

Georgia Tech wide receiver Calvin Johnson remains the best prospect on Mel Kiper's Top 25 Big Board, but that doesn't necessarily mean he will be the No. 1 overall pick.

Updated: April 22, 2007, 9:49 PM ET
By Mel Kiper Jr. |
1. Calvin Johnson*, WR, Georgia Tech (6-4, 225) | previous: Same
He's not only a tremendous athlete, but he's a hard worker and very team oriented. Based on the needs of the Raiders and Lions, Johnson might not be the No. 1 overall pick, but he won't fall out of the top five.

2. Joe Thomas, OT, Wisconsin (6-6½, 313) | previous: Same
Huge, quick and athletic with a long wingspan.

3. Adrian Peterson*, RB, Oklahoma (6-1½, 218) | previous: Same
The most talented running back in the draft with an excellent burst to the outside for his size. The concern with Peterson is his durability.

Mel Kiper Jr.

Football analyst