What is every Big Ten Conference team's record against the over/under line as a road underdog since the 2014 season?

Definitions
Team Over Record Over % Under % Total +/-
Ohio St 2-0-0 100.0% 0.0% +19.0
Michigan 9-3-0 75.0% 25.0% +3.1
Indiana 20-15-0 57.1% 42.9% +2.8
Nebraska 16-15-0 51.6% 48.4% +2.8
Illinois 20-21-2 48.8% 51.2% +2.0
Northwestern 15-18-2 45.5% 54.6% -0.8
Minnesota 14-17-1 45.2% 54.8% -1.2
Maryland 16-20-0 44.4% 55.6% -0.5
Penn St 6-8-0 42.9% 57.1% +1.4
Wisconsin 3-4-0 42.9% 57.1% +0.1
Purdue 13-20-1 39.4% 60.6% -3.3
Michigan St 11-17-0 39.3% 60.7% -1.6
Iowa 9-14-0 39.1% 60.9% -4.0
Rutgers 16-28-0 36.4% 63.6% -0.7