were attributed to adjusting to the faster pace of the NFL. Days after the game, teammate Hines Ward placed a ball in Mendenhall's locker with a note stating, "Take Mendenhall's ball away and get $100 from him." Mendenhall was required to carry the ball everywhere he went until the team's next game. Mendenhall fumbled once more in the Steelers final pre-season game, but worked with running backs coach Kirby Wilson to fix the problem. Mendenhall entered the 2008 regular season as the Steelers' youngest player. He took on return duties in addition to his running back position. Entering the fourth week of the 2008 season, Willie Parker suffered an injury which allowed Mendenhall to make his first NFL start. Mendenhall rushed for 30 yards on 9 carries, but was forced to leave the game with a fractured shoulder in the third quarter after a hit by Baltimore Ravens linebacker Ray Lewis. Mendenhall was placed on injured reserve for the remainder of the season. Mendenhall finished his rookie season with 58 rushing yards on 19 carries and 115 yards on six kick returns. In week 4 of the 2009 season, Mendenhall started in place of an injured Willie Parker. Against the San Diego Chargers, he jump-started his NFL career by rushing for 165 yards and two touchdowns. After a 2009 season where Mendenhall ran for 1,108 yards and 7 touchdowns, his 2010 season proved to be even more impressive. In 2010 Mendenhall ran for 1,273 yards and 13 touchdowns, helping lead the Steelers back to the Super Bowl against the Green Bay Packers, which they subsequently lost. The loss was aided by a 4th quarter fumble by Mendenhall that led to a Packers scoring drive. The 2011 season was a difficult season for Mendenhall, who only rushed for over 100 yards two times in 15 games. However, Mendenhall scored 9 touchdowns and had a 4.0 yards per carry average. On January 1, 2012, Mendenhall left the last regular season game against the Cleveland Browns with a knee injury on the final play of the 1st quarter. It was soon discovered that he had torn his ACL and was placed on the IR list. Mendenhall finished the year with 928 yards rushing. On December 12, 2012, Mendenhall was suspended by the Steelers organization for a game against the Dallas Cowboys for not showing up to a game against the San Diego Chargers