3. Rex Grossman
Years Played: 2003-Present
Teams: Chicago Bears, Houston Texans, Washington Redskins
Super Bowl Stats: SB XLI: 20-28, 165 YDS, 1 TD, 2 INT
Career Stats: Record: 25-22-0, 71.4 QBR, 10,232 YDS, 56 TD, 60 INT
Rex Grossman should be the poster boy for mediocre quarterbacks. In less than 50 starts he has 1,000 completions, and more interceptions than touchdowns. None the less, Grossman managed to make the most with limited time as a starter as he rode a strong Bears defense all the way to Super Bowl XLI in 2007. He silenced his critics with playoff victories over the Seahawks and the Saints leading up to the Super Bowl, but then the clock struck midnight, and Rex turned back into a verbally-abused step child. He threw two costly interceptions and Peyton Manning got to lift the Lombardi trophy instead. Grossman hasn't recovered since.