Ben Liebenberg / NFL.com
Mark Sanchez has moved ahead of Matthew Stafford in Mike Mayock's list of the best QB prospects.


With 46 underclassmen having been granted special eligibility, here's a breakdown of the top five college football players at each position heading into the 2009 NFL Draft:

» Mayock's top 20 prospects

Mike Mayock's top prospects by position for the 2009 NFL Draft
Rank Player School Comment
Quarterbacks
1
*Mark Sanchez USC Tremendous skills, 16 college starts
2
*Matthew Stafford Georgia Elite arm, inconsistent in pocket
3
*Josh Freeman Kansas State Tremendous arm/athletic, speed-up process
4
Pat White West Virginia Excellent arm/accuracy, the new 'slash'?
5
Stephen McGee Texas A&M Physical/athletic, injured as a senior
Running backs
1
*Knowshon Moreno Georgia Lateral quickness, love his finish
2
*Chris "Beanie" Wells Ohio State Downhill runner, inconsistent durability
3
*Donald Brown Connecticut Great quickness, makes people miss, patient
4
*LeSean McCoy Pittsburgh Vision and cutback ability, questionable long speed
5
*Shonn Greene North Carolina State Fast riser, durability issues
Fullback
1
Tony Fiammetta Syracuase Old-school blocker, robotic-but-able receiver
2
Quinn Johnson LSU Lead blocker/special teams, 5 career catches
3
Brannan Southerland Georgia Versatile blocker and receiver, durability issues
Wide receivers
1
*Michael Crabtree Texas Tech Great ball skills/competitor, questionable long speed
2
*Percy Harvin Florida Big-play ability, durability/usage
3
*Jeremy Maclin Missouri Explosive R.A.C., production/added value RS
4
*Darrius Heyward-Bey Maryland H-W-S specimen, inconsistent hands
5
*Brian Robiskie Ohio State Best route-runner, great value
Tight ends
1
Brandon Pettigrew Oklahoma State Old-school TE like Jason Witten, not a blazer
2
Cornelius Ingram Florida Gifted athlete, missed '08 (torn ACL)
3
Shawn Nelson Southern Miss Gifted vertical receiver, willing blocker
4
Jared Cook South Carolina Tremendous measurables, vertical threat
5
*James Casey Rice Natural ball skills, not a blocker
Centers
1
Max Unger Oregon 4-position OL, will struggle with speed
2
Eric Wood Louisville Tough guy/finishes well, struggles to redirect feet
3
Alex Mack California Intelligent/great technique, on ground too much
4
A.Q. Shipley Penn State Short arms/good player, understands technique/leverage
5
Antoine Caldwell Alabama Can play all 3 interior OL spots, tough guy
Guards
1
Andy Levitre Oregon State Former LT, must kick inside
2
Duke Robinson Oklahoma Massive brawler, will struggle with speed
3
Kraig Urbik Wisconsin 4-position OL, solid technician/long career
4
Tyronne Green Auburn Tremendous Senior Bowl week, great initial pop/must sustain
5
Herman Johnson LSU Largest baby in La. history, scheme-specific player
Offensive tackles
1
Eugene Monroe Virginia Kept Branden Albert at guard, gifted pass protector
2
Jason Smith Baylor Think Ryan Clady, needs run-game improvement
3
*Andre Smith Alabama Surprisingly nimble feet, beware weight fluctuation
4
Michael Oher Mississippi Naturally gifted LT, highly inconsistent
5
*Eben Britton Arizona Solid technician, needs more sand in pants
Defensive ends
Rk Player School Comment
1
Robert Ayers Tennessee Great burst at Senior Bowl, one-year wonder?
2
Tyson Jackson LSU Scheme diverse, might kick inside
3
Everette Brown Florida State Right DE or rush LB, significant upside
4
Paul Kruger Utah Great motor/stacks edge, not an elite edge burst
5
Michael Johnson Georgia Tech Physical specimen, Too much bad tape
Defensive tackles
1
B.J. Raji Boston College Run stuffer can push pocket, stay at 328 pounds!!!
2
Peria Jerry Mississippi 1-gap penetrator, must stay healthy
3
Evander "Ziggy" Hood Missouri Energizer Bunny, scheme will be crucial
4
Ron Brace Boston College Gifted run defender, limited pass-rush ability
5
Fili Moala USC Physical specimen, must be more consistent
Inside linebackers
1
Rey Maualuga USC Explosive point of attack, can struggle in space
2
James Laurinaitis Ohio State Consistent technician, clean off the field
3
Jasper Brinkley South Carolina No comment
4
Darry Beckwith LSU Athletic and solid tackler, engulfed by big bodies
5
Jason Phillips TCU Productive/hard-nosed, had postseason knee surgery
Outside linebackers
1
Aaron Curry Wake Forest Scheme diverse/high-level performer, safest pick in draft
2
Brian Orakpo Texas Talented conversion guy, explosive off edge
3
Brian Cushing USC Love attitude/passion, 4-3 SAM/3-4 ILB?
4
Clay Matthews USC Special talent, Nickel OLB
T-5th
Larry English Northern Illinois Can run the arc, level of competition
T-5th
Aaron Maybin Penn State Can he sustain 250 pounds or stop the run?
Cornerbacks
1
Malcolm Jenkins Ohio State Great length/very physical, CB or FS?
2
Vontae Davis Illinois Highly gifted skill-set, inconsistent on/off field
3
Darius Butler Connecticut Best feet/C.O.D. at Senior Bowl, must tackle consistently
4
Alphonso Smith Wake Forest Great instincts/ball skills, size/speed questions
5
*Jairus Byrd Vanderbilt Quick feet/thin frame, loves to compete
Safeties
1
Louis Delmas Western Michigan Aggressive vs. run/good tackler, average in man-to-man
2
Patrick Chung Oregon Very solid box safety, likes press/dislikes off-man
3
William Moore Missouri Jekyll or Hyde, physically gifted
4
Rashad Johnson Alabama Made 11 INTs in two years, CB body
5
Chip Vaugn Wake Forest Good size/speed, special teams gunner


* -- underclassman granted special eligibility

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