first Kent State alumnus to play at linebacker for the team since Hall of Famer Jack Lambert. Harrison spent two years on and off the practice squad for the Steelers, being released three times, and also was briefly on the active roster towards the end of the 2002 season, playing only special teams. Teammate and fellow linebacker, James Farrior, later told NFL Network that Harrison was so green early on in his career that he would simply "give up" on plays on which he was struggling and even would ask the coaches not to play him when he was struggling. Farrior said, "He was a knucklehead that didn't know the plays. We'd be in practice, in training camp, and he might not know what he was doing so he'd just stop and throw his hands up and tell (the coaches) to get him out of there. We thought the guy was crazy." Harrison wore number 93 during this period before adopting his more well known number 92, which at the time was worn by fellow linebacker and Pro Bowler Jason Gildon. Baltimore Ravens and Rhein Fire He was signed by Baltimore in late 2003, then sent to the Rhein Fire of NFL Europe, but eventually was cut by the Ravens. Second stint with Steelers 2004 After being cut for a fourth time, Harrison considered not playing anymore. Shortly thereafter, he was signed a fourth time by the Steelers during training camp in 2004 after Clark Haggans sustained an injury in an offseason weightlifting accident. Showing much improvement, Harrison made the final roster and remained with the Steelers through the 2012 season. Harrison later told the Beaver County Times that if not for Haggans's injury, he planned to retire from football at age 26 to focus on becoming a veterinarian, something that Harrison still plans on doing now that his football career has ended. Harrison also considered following in his father's footsteps to become a truck driver, and to this day does have a commercial driver's license. Throughout the 2004 season, Harrison mostly played on special teams and on defense at linebacker, with occasional reps at defensive end. His first career start came against his hometown Cleveland Browns in Cleveland on November 14 after teammate Joey Porter and Browns running back William Green were ejected for fighting during the pregame warm-ups. Harrison had a good game statistically in the Steelers' 24–10