It was a slow season in terms of movement with only a few changes.
1991 FCS Over FBS Victories (8)
- Louisiana-Monroe @ Louisiana, 21-10
- UNLV @ Nevada, 50-8
- Long Beach State @ Boise State, 48-14
- Illinois State @ Akron, 25-3
- William & Mary @ Navy, 26-21
- Appalachian State @ Army, 20-14
- The Citadel @ Army, 20-14
- Delaware @ Navy, 29-25
There were no ties between I-A and I-AA teams in the 1991 season.
Jim Tressel and the Youngstown State Penguins (12-3 Overall as I-AA Independent) began their 90s dominance with their first title when they defeated Marshall (11-4 Overall, 5-2 Southern Conference) 25-17 in the championship game.
There were no conference changes for the 1991 I-AA season.
Southeast Missouri State joined the I-AA level and moved to the Ohio Valley Conference. Nicholls left I-AA independent status to join the Southland Conference. Hofstra and Tennessee-Martin moved up from Division III and Division II independent status, respectively, and became I-AA independents.
Hofstra moved up to the I-AA level from Division III, but the NCAA Handbook does not recognize its move until 1993. Tennessee-Martin is not listed as I-AA until 1992, but they played a mixed schedule in 1991. We include both teams, but it is a moot point as neither team faced any I-A/FBS opponents in 1991 or 1992.
Troy began their transition from the Division II Gulf South Conference to I-AA as they faced 8 I-AA opponents in 1991. The NCAA has them starting in 1993, however, we opted to include them as an I-AA team due to the transition.
The I-AA Playoffs continued along with the same format for the sixth straight season. 16 teams, the top four teams were seeded, and campus sites were used through the semifinals. The title game was played on December 21 at Paulson Stadium in Statesboro, Georgia for the third consecutive season (and final time to date).