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 18-14-1 56.2% 43.8% +6.2
Iowa State 24-20-0 54.5% 45.5% +1.8
Texas A&M 21-18-1 53.8% 46.2% +3.0
W Virginia 11-10-0 52.4% 47.6% +5.0
Oklahoma St 20-21-1 48.8% 51.2% -1.0
TX Christian 36-39-0 48.0% 52.0% +2.1
Texas Tech 29-33-2 46.8% 53.2% -3.1
Missouri 19-23-0 45.2% 54.8% -1.3
Kansas St 18-22-0 45.0% 55.0% -0.6
Baylor 6-9-0 40.0% 60.0% -6.3
Nebraska 25-39-1 39.1% 60.9% -1.0
Oklahoma 10-26-1 27.8% 72.2% -7.5
Kansas 0-1-0 0.0% 100.0% -13.5