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Defensive Ends: (4) Charles Johnson, Thomas Keiser, Frank Alexander, Greg Hardy,
Charles Johnson is arguably the best defensive end in the NFC South, and the Panthers need another defensive end to step up opposite him.
The assumption was that Greg Hardy would mature into that position to give Carolina a lethal pass rush off the edge, but he hasn't been able to do that up to this point.
Thus far in the preseason, Thomas Keiser and Frank Alexander have outplayed Hardy, and there are questions as to whether or not Hardy will make the team.
I don't think the Panthers are ready to give up Hardy just yet because of his immense potential.
Defensive Tackles: (4) Ron Edwards, Sione Fua, Terrell McClain, Andre Neblett
The return of Ron Edwards this season, who missed all of last season with a torn triceps, is huge for the defensive tackle unit.
Last season, the team finished 25th in run defense, and that has to improve if it hopes to make the playoffs this season.
The return of linebacker Jon Beason and drafting of Luke Kuechly will make the run defense much better this season, as long as the defensive tackles perform adequately.
While the Panthers defensive tackle corp isn't eyebrow-raising, the group has the ability to get the job done. This will certainly be a unit that the Panthers will address in future off seasons.
Linebackers: (7) Jon Beason, Luke Kuechly, Thomas Davis, James Anderson, Jason Williams, Ken Onatolu, Jordan Senn,
The Panthers linebacking corps that starts this season will be drastically different than the one that ended last season. With the players the Panthers have returning from injury and the drafting of Luke Kuechly, this year's unit should be much better.
Beason and Kuechly could make the unit one of the best in the NFC and will both be tackling machines.
If Davis is able to get healthy and play at anything close to his pre-injury level, then the Panthers could have one of the best linebacker units in the entire league.
However, Beason and Davis have been dealing with injuries in camp and need to prove that they can return to their healthy, productive forms.