Injuries decimated the Panthers' defensive tackle corps last season and after several personnel changes in the offseason, the position is considered by some to be a major weakness for the team. Former Colt Ed Johnson probably wouldn't be a starter on most teams, but he has surprised some observers by rising to the top of an unimpressive pack at D-tackle. Johnson, who was cut by the Colts after one game last season, did a good job of getting pressure up the middle and also was stout vs. the run in Week One. He has played in just six games since the start of the 2008 season, so sources say the team is concerned about how he's going to hold up dealing with a full workload for the first time since the '07 campaign. Derek Landri, who made his first career start, and Louis Leonard were the only other D-tackles on Carolina's active roster in Week One.