Top 10 NFL prospects by position

Marcus Mariota, Leonard Williams and Amari Cooper are all atop their respective position groups. USA TODAY Sports

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Offense: QB | RB | FB | WR | TE | OT | G | C | K/P

Defense: DE | DT | OLB | ILB | CB | S

The 2015 NFL combine begins Tuesday, so I wanted to put out an update of where players stand going in, as there will obviously be some changes coming out based on performances, updated measurements and -- as is always the case -- new details that emerge out of medical exams. On my own board, I have about 40 to 100 prospects graded by position. But at this point, there are so many changes beyond the top 10 at each slot, I don't want to release too much of that until closer to the draft and I get more comfortable with where I have everyone. In a nutshell: There's still a lot of work to be done.

Remember: Prospects are listed under my projected NFL position, and that can be a little tough with some of the more versatile players, even before you get into schemes. A college tackle could be listed at guard, a college defensive end listed at linebacker, and so on.

* Denotes junior
** Denotes third-year sophomore



1. **Jameis Winston, Florida St.
2. *Marcus Mariota, Oregon
3. *Brett Hundley, UCLA
4. Bryce Petty, Baylor
5. Garrett Grayson, Colorado St.
6. Sean Mannion, Oregon St.
7. Bryan Bennett, Southeastern Louisiana
8. Rakeem Cato, Marshall
9. Mark Myers, John Carroll
10. Grant Hedrick, Boise St.

The names that weren't on the previous ranking are the final three on the list -- Cato, Myers, and Hedrick. I'm not sure any QB has moved up for me more in the past month than Hedrick, who has a chance to stick on a roster. He lacks height (he is just under 6 feet) but does a lot of other things well. Frankly, it's a pretty thin class and I wouldn't be surprised if we see more movement after Petty, as pro days will shift some evals for guys down the list. Blake Sims (Alabama) was on the edge here.

Running backs