What is every Big 12 Conference team's record against the over/under line as an underdog in the 2017-2018 season?

Definitions
Team Over Record Over % Under % Total +/-
Kansas 4-2-0 66.7% 33.3% +1.3
Oklahoma 5-3-0 62.5% 37.5% +4.0
Texas Tech 5-3-0 62.5% 37.5% +3.1
Texas 10-7-0 58.8% 41.2% +5.9
TX Christian 4-3-0 57.1% 42.9% +2.1
Iowa St 11-9-1 55.0% 45.0% +0.6
Oklahoma St 8-10-1 44.4% 55.6% +0.3
Baylor 7-9-1 43.8% 56.3% -1.5
Kansas St 5-12-0 29.4% 70.6% -2.8
W Virginia 1-3-0 25.0% 75.0% -2.8