4.) Kendrell Bell
Who knew that the time that Kendrell Bell would have peaked in his first season in the NFL, after taking home the 2001 Defensive Rookie of the Year.
After being drafted in the 2nd round of the 2001 draft by the Pittsburgh Steelers, Bell came out of the gates firing on all cylinders. He started all 16 games for a strong Steeler defense, and recorded over 80 tackles and 9 sacks on his way to being named to the Pro Bowl.
By the time his fourth and final season in Pittsburgh came around, Bell only played in three games while starting zero as a knee injury kept him out until Week Nine, and re-injuring the knee ended his season, and career, with the Steelers.
Kansas City signed the former Georgia Bulldog to a contract worth over $5m a year prior to the 2005 season. Unfortunately, he never regained his 2001, or even his pre-injury form. Bell started 28 games in three seasons with Kansas City, but amassed less than 100 tackles total and 2.5 sacks in that time. Bell retired due to repeated injuries after the 2007 season after failing to start a single game for Kansas City that year.