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2) Demetrius Bell, Buffalo Bills

Age as of 1st September, 2012: 28

2011 Grade: +6.8

Key Stat: Allowed pressure only once every 28 pass plays in 2011, up from 13.6 in 2010.

Behind the Number: Playing under a restricted free agent tag in 2011, Bell looked to be putting together the classic “contract season” performance until it was curtailed by injury. To his credit, Bell didn’t slip into poor performances of the past in a three-game stint at the end of the season, but is 401 snaps of true quality enough for a team to invest in him long term? Bell was Jason Peters’ replacement after he bolted for Philadelphia, but he was slow to repay the Bills’ faith in him. He has taken large strides since his first season as a starter in 2009 drastically reducing his pressures allowed and penalties conceded through 2010 and 2011. Another big stride in 2012 would see Bell join the league’s Top 10 left tackles. If multiple teams see that as a real possibility Bell’s market value could rise when free agency opens.

Ranking the 2012 Free Agents: Offensive Tackles | ProFootballFocus.com