Pittsburgh Steelers defensive end Brett Keisel (99) in action during a game against the Minnesota Vikings at Heinz field in Pittsburgh PA. Pittsburgh won the game 27-17. (Credit Image: © Mark Konezny/Southcreek
Pittsburgh Steelers defensive end Brett Keisel (99) walks the sidelines before the start of the preseason game with the New York Giants at Heinz Field in Pittsburgh on August 10, 2013. UPI/Archie Carpenter Stock Photo - Alamy
Pittsburgh Steelers' Brett Keisel celebrates after the Steelers defeated the Baltimore Ravens 13-10 at M & T Bank Stadium in Baltimore on December 5, 2010. UPI/Kevin Dietsch Stock Photo - Alamy
Pittsburgh Steelers defensive end Brett Keisel (99) walks the sidelines before the start of the preseason game with the New York Giants at Heinz Field in Pittsburgh on August 10, 2013. UPI/Archie
Pittsburgh Steelers defensive end Brett Keisel (99) stands on the sidelines during the fourth quarter of an NFL preseason football game against the New York Giants in Pittsburgh, Saturday, Aug. 10, 2013.
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Pittsburgh Steelers defensive end Brett Keisel takes a break during the NFL football team's training camp session in Latrobe, Pa., Monday, Aug. 9, 2010. (AP Photo/Gene J. Puskar Stock Photo - Alamy