This wasn't the case of a talented player riding the bench. Greene demonstrated his playmaking ways early on, tying for the team lead in interceptions as a redshirt freshman (despite only starting one game) and then leading the team with three interceptions as a full-time starting free safety in 2010 (also posting 77 tackles and four forced fumbles).
While productive as a defensive back, few anticipated Greene's explosion in 2011 as the Big East's leading tackler (141), earning him the conference's co-Defensive MVP honors. Greene would have been even more productive had he not suffered a gruesome broken right ankle in the Pinstripe Bowl victory over Iowa State. He recovered from the injury and proved as a senior no worse for wear, leading the Big East yet again with 125 tackles, including 10.5 tackles for loss, 5.5 sacks and an eye-popping six forced fumbles.
Greene's size (or rather, lack thereof) limits his potential in the NFL. He isn't athletic enough to move back to safety and his struggles taking on and shedding blockers means he'll likely only fit as a chase (weak-side) linebacker in the 4-3 alignment. In this role, however, he has the speed and playmaking skills to flourish.
Reliable open-field tackler, generally wrapping both arms around the ballcarrier. Best trait might be his incredible ability to create turnovers. Rips violently at the ball as he makes tackles, showing excellent hand-eye coordination and impressive strength.
Times his blitz well, showing a quick burst to close. Fluid in coverage due to his experience at safety and possesses good ball skills. Shows some natural open-field running skills once the ball is in his hands, as well.
Good bloodlines. Is the half-brother of Pittsburgh running back Ray Graham, also expected to be drafted in 2013. Competitive. Served as a member of the punt and kickoff defense squads in 2012.
WEAKNESSES: Obvious size limitations. Isn't just short; possesses a rocked-up frame that isn't likely to be able to handle much additional weight.
Can get lost in the traffic in tight quarters, losing sight of the ball. A bit inconsistent in his overall physicality. Prefers to slip by blockers, rather than physically taking them on. Sometimes spends too much time going for the strip, rather than simply driving the ballcarrier to the turf.
Teams will want to check Greene's medical grade due to the broken ankle suffered in 2011.
COMPARES TO: Ernie Sims, ILB, Dallas Cowboys -- Possessing great speed, explosiveness and playmaking ability, Sims looked like a future star after being drafted No. 9 overall by the Detroit Lions in 2006. Unfortunately, his size limitations have caught up with him and he's now on his fourth team in as many years.