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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.