leave LSU a couple of months later to return to the professional ranks. NFL Cleveland Browns After leaving LSU, Mitchell was hired as defensive line coach of the Cleveland Browns of the National Football League (NFL) in 1991. He coached for the Browns under head coach Bill Belichick for three seasons, helping to develop Michael Dean Perry (who twice made the Pro Bowl in Mitchell's three seasons with the team) and Rob Burnett (who made his only Pro Bowl in Mitchell's final year with the club). Pittsburgh Steelers In 1994, he moved on to become the defensive line coach of the Pittsburgh Steelers under Bill Cowher, replacing Steve Furness. He's been with the Steelers ever since, making him the club's longest tenured coach, and one of the longest serving coaches with his current team in the NFL. With the arrival of Mike Tomlin in 2007, Mitchell replaced Russ Grimm as the team's assistant head coach while retaining his responsibilities in coaching the defensive line. The Steelers led the league in stopping the run four times in the first fifteen years of Mitchell's tenure (through 2008). Steelers defensive linemen have participated in the Pro Bowl eight times since Mitchell's arrival: Casey Hampton (five Pro Bowls), Aaron Smith (once), Brett Keisel (once) and Joel Steed (once). The team as a whole has also had tremendous success during Mitchell's tenure, making the playoff eleven times and reaching the AFC Championship Game eight times in his first 18 years. They've also made it to four Super Bowls, winning the championship in 2005 and again in 2008. In Super Bowl XL in February 2006, the Steelers faced a tough test in slowing Seattle Seahawks All-Pro running back Shaun Alexander who ran for 1,880 yards and scored an NFL record 28 touchdowns in the regular season behind an offensive line that featured All-Pro linemen Walter Jones and Steve Hutchinson on the left side. The defensive line would need to slow down the Seahawks running attack to keep the Steelers in the game, a challenge which Mitchell took personally. The players came through holding Alexander under the 100-yard plateau and most importantly preventing him from scoring, which was crucial to a Steelers win. After the game, Mitchell said of the strategy, "Our thing was 'keep him out of the end zone.' We didn't care if he got 300 yards; don't let him in the end zone." In