What is every Big 12 Conference team's record against the over/under line as an underdog in the 2015 season?

Definitions
Team Over Record Over % Under % Total +/-
Baylor 1-0-0 100.0% 0.0% +13.0
Oklahoma 1-0-0 100.0% 0.0% +2.0
Texas Tech 5-2-0 71.4% 28.6% +10.1
W Virginia 2-1-0 66.7% 33.3% +3.3
Kansas St 5-3-0 62.5% 37.5% +9.3
Oklahoma St 3-2-0 60.0% 40.0% +3.4
Kansas 5-6-0 45.5% 54.6% -2.6
Iowa St 4-5-1 44.4% 55.6% +1.1
TX Christian 1-2-0 33.3% 66.7% -4.7
Texas 2-5-0 28.6% 71.4% -4.9