Green was one of the Aggies' starting defensive back in 2009, playing in all 13 games. Green tallied 74 tackles on the season, a tackle for a loss and eight pass break-ups. Green was fourth on the team in tackles on the season. He recorded eight games on the season where he tallied six or more tackles. At Louisiana Tech (10/10), Fresno State (10/24) and Ohio State (10/31), Green grabbed a career-high eight tackles in each game. Versus Idaho (9/5), he tallied seven tackles and a pass break-ups in his first career start. Against UTEP (9/19), Green had five tackles and season-high two pass break-ups.
Green redshirted his first season with the Aggies.
Green played both defensive back and running back for Lakewood High School. During his junior season, Green played defensive back and collected 40 tackles and four interceptions on the season. His senior season, Green made the move to running back where he tallied 950 yards rushing and six touchdowns. He also returned three kickoffs for touchdowns. Green was named an all-district selection his senior season. He also ran track, making it to the state championships in the 100-meter dash, the 4x100-meter relay and the 4x400-meter relay.