What is every Big Ten Conference team's record against the over/under line as an underdog since the 2008-2009 season?

Definitions
Team Over Record Over % Under % Total +/-
Ohio St 80-66-1 54.8% 45.2% +2.2
Penn St 146-127-2 53.5% 46.5% +1.6
Michigan 93-83-7 52.8% 47.2% +0.5
Michigan St 64-60-2 51.6% 48.4% +0.9
Nebraska 145-137-3 51.4% 48.6% +1.0
Purdue 61-59-0 50.8% 49.2% +1.8
Minnesota 121-120-3 50.2% 49.8% +0.5
Indiana 107-107-4 50.0% 50.0% +0.5
Rutgers 141-142-4 49.8% 50.2% +0.6
Iowa 102-110-2 48.1% 51.9% +0.9
Maryland 94-102-3 48.0% 52.0% -0.4
Northwestern 120-135-5 47.1% 52.9% 0.0
Illinois 89-106-2 45.6% 54.4% -1.0
Wisconsin 68-86-2 44.2% 55.8% -0.9