Former Bowie State and Pittsburgh Steelers running back Isaac Redman has retired from the NFL due to a spinal cord injury.
Redman announced his retirement on his Twittter account.
"Why I'm not in the NFL?" Redman wrote. "To those who are wondering why I am not playing anymore. Last season, I tried my best to play through a neck injury, but I just wasn't myself on the field."
Redman was examined by Dr. Robert Watkins in California, the specialist who performed Denver Broncos quarterback Peyton Manning's neck surgery when he was playing for the Indianapolis Colts.
After undergoing two magnetic resonance imaging exams and a CAT scan, the doctor informed Redman that his football career was over.
"He told me I suffered a career-ending injury to my spinal cord," Redman wrote. "Various teams have called, but as you can see I was unable to go. I would like to thank all my fans for their tremendous support throughout my career."
After going undrafted in 2009 out of Bowie State, Redman forged a solid career with the Steelers. In five seasons, Redman rushed for 1,148 yards and five touchdowns on 282 carries.
Redman was released by the Steelers last year after he suffered a concussion.