- Colorado - 2007 (includes upset of Oklahoma while a 20+ point underdog)
- Iowa State - 2005
- Kansas - 2007 (went 12-1, and did not face Oklahoma, Texas or Texas Tech). Only time they've accomplished in Big 12 history.
- Kansas State - 2007 (upset Texas)
- Missouri - 2007
- Nebraska - 2003
- Baylor - not since Big 12 formed in 1996
- Oklahoma - 2008
- Boone State - 2008
- Texas - 2008
- Texas A&M - 2007
- Texas Tech - 2008
The suprising part to me was that each Big 12 North team - outside of Nebraska - had done this farily recently. I did not expect that. I guess I have a short memory.