What is every Big 12 Conference team's record against the over/under line as an underdog since the 2004 season?

Definitions
Team Over Record Over % Under % Total +/-
Oklahoma 17-11-1 60.7% 39.3% +2.4
Houston 47-34-1 58.0% 42.0% +2.7
TX Christian 37-29-0 56.1% 43.9% +2.4
Kansas St 65-52-1 55.6% 44.4% +2.3
Texas Tech 59-50-1 54.1% 45.9% +2.3
Texas A&M 48-41-0 53.9% 46.1% +1.5
Kansas 88-78-2 53.0% 47.0% +1.5
Nebraska 48-43-1 52.8% 47.3% +2.5
W Virginia 41-37-2 52.6% 47.4% +2.0
Colorado 83-79-2 51.2% 48.8% -0.3
Oklahoma St 41-46-0 47.1% 52.9% +1.2
Missouri 41-48-1 46.1% 53.9% -1.1
Baylor 55-66-2 45.5% 54.6% -0.1
UCF 37-46-2 44.6% 55.4% -0.4
Cincinnati 40-50-0 44.4% 55.6% -1.3
Iowa St 62-83-1 42.8% 57.2% -1.2
BYU 35-49-2 41.7% 58.3% -2.6
Texas 24-44-1 35.3% 64.7% -3.7