Allen made his NFL debut in week 7 against the
Pittsburgh Steelers due to an injury to starting cornerback
Antoine Winfield. In the game, Allen made two key fourth quarter plays. He first made a touchdown-saving tackle on a kick return by
Stefan Logan. Later in the drive he caused a fumble on Steelers quarterback
Ben Roethlisberger, resulting in a fourth down. In week 11 against the
Seattle Seahawks, Allen intercepted a pass from
Matt Hasselbeck for his first NFL interception. He was placed on
injured reserve at the end of the
2011 season due to a
concussion. After three seasons of play, he announced his retirement from the NFL on May 30, 2012. ==Personal==