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LSU position groups to improve: No. 4

BATON ROUGE, La. -- With more than three weeks to go until LSU opens spring practice on March 7, we'll use some of the down time to preview the upcoming series of team workouts.

Today we continue this week's series listing five position groups with room to improve in the fall. Yesterday we discussed the tight ends, who could develop a more active presence in the passing game in Year 2 under offensive coordinator Cam Cameron. Now we move onto the defensive tackles, who were good but rarely dominant last season and now must replace both starters.

4. Defensive tackle

Battling for No. 1: High-profile departures on offense will draw the most attention between now and the season, but this position is every bit as important as who will replace the likes of Odell Beckham, Jarvis Landry and Jeremy Hill. Anthony Johnson and Ego Ferguson bolted for the NFL after their junior seasons, leaving a great deal of inexperience at a key position. Rising sophomore Christian LaCouture (11 tackles, 1.5 tackles for a loss and one sack last fall) and junior Quentin Thomas (nine tackles, 1.5 TFL, one fumble recovery) have the most experience, but that isn't saying much.

Strength in numbers: Rising junior Mickey Johnson (three tackles in four games) was a top 150 recruit when he signed with LSU in 2011 but has yet to make a major impact. Not only must LSU's coaches pick from a large group of signees and players coming off a redshirt season to fill out the depth chart, but they need some of them to push for starting positions. At this point, however, it's tough to predict which members of the group will earn a role in the rotation -- a traditional element of LSU defense that barely existed last year since Johnson and Ferguson played the majority of downs and LaCouture and Thomas handled most of the reserve snaps.

New on the scene: The good news here is that LSU defensive line coach Brick Haley has some talented players to add to the mix this fall. They're just young. Greg Gilmore and Maquedius Bain were both among LSU's highest-rated signees a year ago, and both are ESPN 300 prospects are coming off a redshirt season. So is Frank Herron, whom LSU lists as a defensive end, but who could develop into an interior lineman. Finally, the Tigers signed three players last week who they list as defensive tackles. Four-star, 300-pound tackles Travonte Valentine and Trey Lealaimatafao both announced on signing day that they were LSU-bound. Davon Godchaux -- whom ESPN graded as a four-star defensive end -- stuck with his LSU commitment and is also listed as a tackle.