Marcus "Marshay" Kentrill Green (born January 14, 1986) is a professional gridiron football defensive back who is currently a free agent. He was signed by the Arizona Cardinals as an undrafted free agent in 2010, spending two seasons with the club before joining the Indianapolis Colts for another two seasons. He played college football at Ole Miss. Green was the 2009 Defensive MVP in the nationally televised Cotton Bowl. Green signed with the Saskatchewan Roughriders on May 20, 2014.