The Jacksonville Jaguars added to their defensive front seven on Tuesday by signing defensive tackle Sen'Derrick Marks to a one-year contract according to nfl.com. Marks was considered one of the best defensive tackles left on the free agent market and the Jags scored a coup in signing him away from their division rivals the Tennessee Titans. Marks started in 14 games with the Titans during his fourth NFL season in 2012, recording 30 tackles and 1.5 sacks. The Titans drafted him in the second round in 2009 out of Auburn. Marks graded out as one of the league's worst defensive tackles in Pro Football Focus' ratings last season, but is still only 26, he should help a Jags front line that allowed 141 rushing yards per game in 2012. Source: The Redzone
