What is every Big 12 Conference team's record against the over/under line as a home underdog since the 2008-2009 season?

Definitions
Team Over Record Over % Under % Total +/-
Colorado 19-12-0 61.3% 38.7% +3.3
Texas A&M 21-17-1 55.3% 44.7% +3.2
Iowa State 22-18-0 55.0% 45.0% +3.2
Texas 17-14-1 54.8% 45.2% +6.1
W Virginia 10-10-0 50.0% 50.0% +3.6
Oklahoma St 18-20-1 47.4% 52.6% -1.2
TX Christian 34-38-0 47.2% 52.8% +1.9
Texas Tech 29-33-2 46.8% 53.2% -3.1
Missouri 19-22-0 46.3% 53.7% -0.9
Kansas St 15-20-0 42.9% 57.1% -0.3
Baylor 6-9-0 40.0% 60.0% -6.3
Nebraska 23-35-1 39.7% 60.3% -0.7
Oklahoma 10-25-1 28.6% 71.4% -7.0