INDIANAPOLIS—When Memphis' Dontari Poe checked in a 6-4 and 346 pounds, it was clear he had the ideal size to be a nose tackle in the NFL. He then helped his draft stock with 44 reps of 225 pounds on the bench press, which showed he worked hard in preparation for the Combine.

On Monday, Poe knocked everyone’s socks off by running the 40-yard dash in the high 4.8s with a quick and explosive initial burst.

Obviously, nose tackles aren't needed to chase plays down all over the field, so the actual 40 time isn't that important. However, his initial acceleration out of the blocks showed he can get out of his stance and on top of offensive linemen before they can get set.

With nose tackles in such demand, Poe moved ahead of Washington's Alameda Ta’amu and could well have locked up a spot in the top 15 picks in the draft

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The final phase of scouting for 2012 begins this week with the Scouting Combine in Indianapolis. Now that the season and all of the following All Star games are complete, it's time to revisit and reshuffle the big board. Here are the top 50 players on SI.com's big board as we get ready for a busy week ahead (* denotes underclassman).

1. Andrew Luck, QB, Stanford* -- Luck has been the top NFL prospect in the nation for almost two years and nothing has changed. He'll be the first player selected in the draft and the Indianapolis Colts will barely notice the bump in the road as they transition from the Peyton Manning era.

2. Matt Kalil, T, USC* -- Kalil's pass protection skills are on par with former Trojan great and All Pro tackle Tony Boselli. The junior needs to improve his run blocking, but possesses all the skills necessary to be a big-time left tackle in the NFL.

3. Trent Richardson, RB, Alabama* -- Richardson is the most complete running back in this draft, and likely the only first-round pick from the position. He's a versatile ball-carrier who also positively effects the game as a pass-catcher. The junior has the skills to immediately produce as a rookie in the NFL.

4. Robert Griffin, QB, Baylor* -- Griffin has the misfortune of being in a draft that includes Andrew Luck, the best quarterback prospect since Peyton Manning. Despite that, he's a legitimate franchise signal-caller and a great combination of athleticism, arm strength and maturity.

5. Quinton Coples, DL, North Carolina -- The top senior on this list is a pure dominator who can play several spots on the defensive line. He's a man amongst boys when on his game, but scouts question Coples' intensity on an every-down basis.

6. Justin Blackmon, WR, Oklahoma State* -- His game was NFL ready last year, but Blackmon decided to return to school to improve his skills as well as work on his degree. Blackmon matured last season as a player and person. His style reminds many of Terrell Owens.

7. Morris Claiborne, CB, LSU* -- Though not the caliber of athlete as former LSU star Patrick Peterson, the fifth pick in last April's draft, scouts think Claiborne is more polished in his ball skills. The junior has the ability to develop into a No. 1 corner for an NFL franchise.

8. Riley Reiff, T, Iowa* -- Reiff is a tremendous pass-blocking left tackle, though many scouts think he could shift to the right side. He possesses the footwork, body type and wherewithal to break into a starting lineup early into his rookie career.

9. Kendall Wright, WR, Baylor -- Wright was the top recipient of passes coming from Robert Griffin, and scouts love his game. He's a legitimate field-stretcher with polished receiver skills. Wright's name sits atop the wideout position on a number of draft boards around the league.

10. Melvin Ingram, DL-OLB, South Carolina -- Few defensive prospects raised their game and draft stock as Ingram did last season. He's a playmaker who stands out in almost every aspect of the defense, with his ability to make plays behind the line of scrimmage or out to the flanks.

11. David DeCastro, G, Stanford -- Andrew Luck's top blocker has been the dominant force on Stanford's offensive line the past two seasons. He's rightfully being compared to All Pro Steve Hutchinson and offers potential in a variety of NFL blocking schemes.

12. Michael Brockers, DL, LSU* -- Brockers capped off a tremendous sophomore season with an awesome showing in the national title game. He's an explosive interior lineman who eats up blocks and collapses the pocket.

13. Dre Kirkpatrick, CB, Alabama* -- Kirkpatrick is a feisty corner who physically beats down opponents to defend passes. He possesses outstanding size, continues to display improved ball skills and projects as a No. 1 cornerback in the NFL.

14. Fletcher Cox, DL, Mississippi State* -- Cox is one of the hidden values at the defensive line position. Scouts feel he's one of few available three-down defenders and offers the ability to play as many as four different positions on the defensive line.

15. Courtney Upshaw, DE-OLB, Alabama -- Upshaw was the feared pass-rusher in Alabama's suffocating defense, and scouts expect much the same from him at the next level. The lingering question is which position will Upshaw play at the next level, outside linebacker or defensive end? Or both?

As expected, three key pieces to Alabama’s championship run are leaving for the NFL, Tidesports.com reported.

RB Trent Richardson, LB Dont’a Hightower and CB Dre Kirkpatrick are expected to announce today at a news conference that they will bypass their senior seasons at Alabama.

The Crimson Tide won its second BCS title in three years Monday, whipping LSU, 21-0, in New Orleans.

In his most recent mock draft, Sporting News draft expert Russ Lande projects Kirkpatrick to be the first Tide player off the board at No. 7 by Jacksonville. Lande projects Richardson will go 16th to the New York Jets. Lande does not have Hightower being selected in the first round, but does have Tide teammate, safety Mark Barron, being taken 17th by Cincinnati.

"To the victor go the spoils" is a cliché that doesn't always necessarily apply to the NFL, at least in regard to getting drafting rights to the next prized college quarterback.

This season, that distinction belongs to Andrew Luck, the Stanford quarterback who is almost universally regarded as a can't-miss performer at the next level. After defeats Sunday, the Indianapolis Colts (0-8) and Miami Dolphins (0-7) lead the Luck sweepstakes — getting the No.1 pick in the 2012 draft — as the only clubs still searching for their first win. The Colts fell behind early in a 27-10 loss to the Tennessee Titans. The Dolphins lost in a more heartbreaking fashion, falling 20-17 to the New York Giants after leading for most of the game. (MORE>>>)