Isaac Redman

ISAAC REDMAN, 30, running back with Pittsburgh, 2009-13, retired on 8/22/14 due to a spinal cord injury.  He was diagnosed with a concussion in Week 2 of the 2013 season and was cut after just three games.  After having 2 MRIs and a CAT scan, Redman retired on the advice of Dr Watkins (known for having performed neck surgery on Peyton Manning).–“Isaac Redman retires from NFL due to spinal cord injury”, NFL.com 8/22/14, Kevin Patra.