Left guard Josh Williford's career at LSU is in jeopardy after he suffered a concussion Thursday in practice, the New Orleans Times-Picayune reported.

Williford sat out LSU's last seven games in 2012 after suffering a concussion in a game against Florida on Oct. 6.

On Thursday, he was unconscious for five minutes after a pileup in practice, according to the Times-Picayune.

Williford is the only senior set to start on LSU's offensive line this season. He played at right guard last year before switching to the other side in the spring.