LSU defensive back Dwayne Thomas will reportedly miss the rest of the season after tearing his ACL against New Mexico State, according to a report from Lawrence Barreca of The Advocate (Baton Rouge).

The injury came when Thomas attempted to change direction while blitzing against NMSU, with his right knee buckling awkwardly. The sophomore had to be helped off the field by trainers and stayed on the sideline on crutches for the remainder of the game.

Thomas sent out a series of tweets Monday morning suggesting that the injury was of a serious nature. Les Miles declined to comment on the severity in his Monday press conference, saying the injury was still being evaluated.

The sophomore has been a key cog in LSU’s defensive back rotation, playing as the nickelback and serving as the primary pass rusher in the secondary. He is fifth on the team with 24 tackles and has 2.5 tackles for loss, including 1.5 sacks.

In his press conference, Miles mentioned freshmen Jamal Adams and Ed Paris as possible replacements for Thomas for Saturday’s game against Auburn and beyond.