What is every Big 12 Conference team's record against the over/under line as a home underdog since the 2011 season?

Definitions
Team Over Record Over % Under % Total +/-
Oklahoma 1-0-0 100.0% 0.0% +10.5
Texas A&M 7-4-0 63.6% 36.4% +8.9
Texas Tech 15-10-1 60.0% 40.0% +6.4
W Virginia 10-7-0 58.8% 41.2% +7.7
TX Christian 7-5-0 58.3% 41.7% +2.8
Iowa State 19-14-1 57.6% 42.4% +1.9
Oklahoma St 7-6-0 53.8% 46.2% -0.8
Kansas 24-21-0 53.3% 46.7% +0.4
Missouri 10-9-0 52.6% 47.4% -3.8
Baylor 6-7-0 46.2% 53.8% +3.5
Texas 5-9-1 35.7% 64.3% 0.0
Kansas St 8-17-0 32.0% 68.0% -0.6