Teams LSU played twice in a season: 1900 Milsaps 1904 Louisiana Tech 1943 Georgia 1943 Texas A&M 1959 Ole Miss 1997 Notre Dame 2001 Tennesssee 2003 Georgia That is all the ones I could find real quick. In 1943 there were not many teams playing football due to the war that is why you see LSU play both Georgia and Texas A&M twice.
