What is every Big 12 Conference team's record against the over/under line as an underdog in the 2013 season?

Definitions
Team Over Record Over % Under % Total +/-
Iowa St 7-2-0 77.8% 22.2% +11.3
Oklahoma 2-1-1 66.7% 33.3% +5.4
TX Christian 3-2-0 60.0% 40.0% +4.4
Kansas St 2-2-0 50.0% 50.0% -2.1
W Virginia 4-4-0 50.0% 50.0% +4.4
Texas Tech 3-3-0 50.0% 50.0% -2.1
Kansas 4-6-0 40.0% 60.0% -2.8
Texas 0-5-0 0.0% 100.0% -17.1
Oklahoma St 0-1-0 0.0% 100.0% -12.5