LSU quarterback Ryan Perrilloux, who had legal and disciplinary problems throughout his college career, was kicked off the defending national championship team.

Perrilloux, who had been suspended three times in his college career, "didn't fulfill his obligation as an LSU student-athlete," LSU coach Les Miles said Friday. He did not offer details.

LSU said Friday that Perrilloux is expected to finish out the spring semester at the school.

Perrilloux was a backup to Matt Flynn for the Tigers, who defeated Ohio State to win the national title.

"Ryan was given every opportunity to be a part of this football team," Miles said in a release Friday.

In 12 games last season, Perrilloux completed 51 of 75 passes for eight touchdowns and two interceptions. He led LSU to two victories -- including the Southeastern Conference championship game -- when Flynn, a senior, was injured during the 2007 season.

Miles suspended Perrilloux in February, shortly before spring practice began, for unspecified team violations. Perrilloux's former high school coach, who remains close to the quarterback and his family, has said Perrilloux missed a mandatory team meeting, then missed classes to attend his father's funeral without notifying coaches.

Perrilloux, who was also suspended by the Tigers last summer, was on the fringe of a counterfeiting investigation and was caught trying to enter a Baton Rouge casino with false identification. He also was involved in a fracas at a nightclub in November, but was cleared of wrongdoing.