As we hit the dog days of the offseason, let's take a deep dive into the NFC South and how the Panthers' position groups compare with division rivals. Up first: linebackers.

Carolina Panthers

THE SKINNY: A constant topic of conversation around Carolina this spring was the move to more multiple defensive fronts, meaning new faces and names to fit 3-4 formations rather than the franchise's traditional four down linemen with three linebackers. The Panthers hope some different looks in the second level will improve the pass rush which ranked 27th in total sacks last year.

WHAT WORKED IN 2018: Luke Kuechly had yet another stellar season, earning a sixth Pro Bowl nod and setting a franchise record with 20 tackles for loss.

WHAT DIDN'T WORK IN 2018: Carolina only had one interception by a linebacker in 2018 – and that came when Kuechly grabbed a Hail Mary against Cincinnati. Between 2014-17, the Panthers paced the NFL in interceptions by linebackers. So last season, they failed to generate those big momentum-changing plays.

WHO'S BACK FOR 2019: Kuechly and Shaq Thompson return, while second-year 'backers Jermaine Carter and Andre Smith will battle for playing time. Long-time starter Thomas Davis is now in Los Angeles, wearing a lighter shade of blue with the Chargers.

WHO'S NEW FOR 2019: Draft picks Brian Burns and Christian Miller join the unit as outside linebackers, while veteran Bruce Irvin comes over from Atlanta in the same role. Mario Addison and Marquis Haynes aren't new, but seeing them stand up off the ball in certain sets will definitely look new.