Arrived in Lincoln as a highly touted running back and is leaving a linebacker with NFL potential. He switched positions in the spring of 2008 after struggling through leg and foot injuries for 18 months. Despite his lack of experience, he earned the starting nod on the weak side and showed himself to have the mentality to play at a high level on defense. He even played in the middle during the season. His senior season did not go exactly to plan, as he played only nine games due to a suspension for violating team rules. In that time he made 51 tackles, six for loss and had four pass breakups, causing scouts to wonder what he might become with more experience.

Glenn was a star running back for coach Wayne Mahaffey at Rusk High School for four seasons, rushing for 6,353 yards and 87 touchdowns (both school records) in his four-year career. Glenn's rushing total was the eighth-highest total in Texas Class 3A history and the 27th most in state history, regardless of class. He capped his prep career by rushing for 1,828 yards on 238 carries and scoring 28 touchdowns as a senior. He also caught 10 passes for 159 yards and a touchdown out of the Rusk backfield and helped his team to a 7-3 record and a berth in the Class 3A playoffs.

Glenn's effort as a senior earned him second-team Class 3A all-state honors, and all-district honors for the fourth consecutive season. Glenn topped the 2,000-yard barrier as a junior, rushing for 2,006 yards and 27 touchdowns on 278 carries. His performance earned him third-team all-state honors in his class. He was an honorable-mention all-state pick as a sophomore when he racked up 1,866 yards and 25 touchdowns on the ground. Glenn was ranked as the nation's No. 28 running back prospect by Rivals.com. He committed to Nebraska after also visiting Kansas and had offers from Texas A&M and Oklahoma State, among others.

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Positives: Active linebacker with adequate speed and long arms, which he uses to wrap up ball carriers consistently. ... Attacks downhill, can go through a blocker when blitzing and is willing to throw a shoulder into a blocker to free up teammates. ... Despite his lack of size, he can shed blocks on the edge and find his way through trash to the ball carrier. ... Uses his hands to fight off cut blocks. ... Gives good chase down the line and hustles downfield. ... Physical with running backs coming out on routes and can stay with them in the flat. ... Good drop into coverage, finds the receivers in his area and has the hands to knock away passes.

Negatives: Has a safety build, is short and lacks upper- or lower-body bulk. ... Runs around blocks instead of attacking them. ... Nothing special in his change-of-direction agility -- best when he reacts to plays in front of him. ... Gets engulfed when playing inside the tackles. ... Inexperience at linebacker shows through in his lack of backfield awareness; consistently fooled by misdirection. ... Must make plays on special teams to stick on a roster. ... Durability concerns must be addressed at the NFL Combine.

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