By Tony Pauline, Special to SI.com, TFYDraft.com

Dustin Keller, TE, Purdue: Keller was always considered a pass catcher first and foremost in college. His 40 times in the 4.5s now classify him as a downfield threat at tight end. Keller passed the strength test at the combine, completing 26 reps on the bench. He now has a glimmer of hope as a blocker, a skill he rarely displayed at Purdue.

Sliders

Calais Campbell, DE, Miami-Fla.: Scouts were surprised Campbell entered the draft after a poor junior campaign. He began the season as a potential top-10 pick, left college as a middle first-round choice and left the combine struggling to stay in the top 25 selections.

Mario Manningham, WR, Michigan: His greatest asset in college was his ability to stretch the field. Forty times in the 4.6 area at the combine means times will be rare when he outruns cornerbacks in the NFL. Manningham's draft stock lost almost a full round.

Mike Hart, RB, Michigan: Hart was a complete player in college and has a place in the NFL. But 40 times which averaged 4.7 seconds, after he weighed in at 206 pounds, means his place in the draft is no better than the middle rounds.

Brandon Flowers, CB, Virginia Tech: He was one of the biggest disappointments at the combine. He was considered a top 20 pick and the No. 1 cornerback in the draft by a number of teams. His 40 times in the 4.5 second area, coupled with a marginal practice session, could leave him out of Round 1.

Surprises

Marcus Howard, DE/OLB, Georgia: Forty times of 4.4 seconds are marks usually reserved for receivers, running backs or defensive backs. Howard, a 237-pound defensive lineman in college, did it with ease at the combine.

Craig Stevens, TE, California: Stevens is considered one of the better blocking tight ends in the draft but a minimal receiving threat. His 40 time of 4.65 seconds and outstanding pass catching workout now have many rethinking that opinion.

Jason Jones, DL, Eastern Michigan: He's getting consideration as a 3-4 defensive end. He measured 6-foot-5 inches, 273 pounds and has 36-inch long arms, which makes him a good fit. He also ran surprisingly fast, clocking his 40s in the 4.7 second area.

Bryan Kehl, OLB, BYU: His 40 time (4.65) was faster than most scouts expected.

Notes

The Miami Hurricanes football program has fallen on tough times recently and one needs to look no further than the NFL combine to see why. Since 2001, the program consistently had multiple players selected in Round 1, with a record six being chosen during the initial frame in '04. It was not unusual for the team to have as many as 10 players chosen throughout the seven rounds of the draft in the past. This year just six players from the program were invited to the combine, and the two headliners, defensive end Calais Campbell and safety Kenny Philips, were huge disappointments.