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

Definitions
Team Over Record Over % Under % Total +/-
Ohio St 1-0-0 100.0% 0.0% +48.0
Iowa 4-0-0 100.0% 0.0% +9.0
Nebraska 5-1-0 83.3% 16.7% +5.8
Purdue 3-1-0 75.0% 25.0% +2.8
Indiana 4-2-0 66.7% 33.3% +1.1
Illinois 6-3-0 66.7% 33.3% +9.7
Maryland 4-3-0 57.1% 42.9% +4.9
Northwestern 5-4-0 55.6% 44.4% -1.7
Wisconsin 2-2-0 50.0% 50.0% +2.9
Minnesota 4-4-0 50.0% 50.0% +6.1
Rutgers 3-7-0 30.0% 70.0% -7.3
Penn St 0-2-0 0.0% 100.0% -8.0
Michigan St 0-5-0 0.0% 100.0% -18.1