When an entire college football season isn't enough to prove their worth as top-round selections in the upcoming NFL draft, NFL prospects look forward to the combine to showcase their skills.
Judging by multiple mock drafts this offseason, the 2013 draft looks to be a defensive-heavy class with offensive players taking a backseat.
But that can all change after the 2013 NFL combine.
Here are three players on the offensive side of the football who can really boost their stock at the combine.
Montee Ball, RB, Wisconsin
Wisconsin's Montee Ball is sure to play in the NFL next season, but with a strong showing at the combine, he could find himself being selected in the first round.
As of right now, CBS Sports projects Ball as a second or third-round pick, but Ball has the talent to be a first-round pick in 2013.
At 5'11", 212 pounds, Ball has the perfect build to to be a productive and durable back in the NFL.
In his senior campaign at Wisconsin, Ball rushed for more than 1,800 yards and 22 touchdowns, highlighted by four games with three rushing scores.
He also boasted 10 games of at least 100 yards rushing and averaged 5.1 YPC in 2012.
If Ball impresses at the combine, he could assert himself as a clear second-round pick, or better, a first-round selection.
Terrance Williams, WR, Baylor
Terrance Williams is an extremely talented wideout, but he's the sixth-ranked wide receiver in the 2013 draft, according to CBS Sports.
In his senior campaign at Baylor, Williams proved to be a legitimate threat without Robert Griffin III, practically doubling his receiving yardage from 2011, surpassing the 1,800-yard mark and scoring 12 touchdowns—both career highs.
The 6'2" receiver posted four games of double-digit receptions, including 17 receptions for 314 yards and two touchdowns against West Virginia.
He had four consecutive weeks of two scores and owned eight games of more than 100 yards receiving.
Williams impressed at the Senior Bowl and could see his stock rise further if he takes care of business at the combine, running clean routes and showing the ability to catch the ball away from his body.
E.J. Manuel, QB, Florida State
Manuel has shown the ability to be a dual-threat QB at Florida State, as he threw for more than 3,000 yards and 23 touchdowns and rushed for 310 yards and four TDs this past season.
Manuel had seven games with at least two touchdown passes—including four against Boston College—and sported a 156.0 rating for the season.
At 6'5", 240 pounds, Manuel is a physical player who can sustain hits in the NFL.
If he can make accurate throws (especially on the run) and get the ball down the field, Manuel could be a first-round pick, especially with a handful of NFL teams needing a quarterback in 2013.
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