Some numbers for 2016
Wisconsin (42-30)
Illinois (40-32)
Rutgers (39-33)
Michigan (38-34)
Northwestern (38-34)
Indiana (36-36)
Ohio State (36-36)
Michigan State (35-37)
Nebraska (35-37)
Penn State (35-37)
Purdue (34-38)
Maryland (33-39)
Minnesota (32-40)
Iowa (31-41)
The numbers in parentheses are the combined opponent records
Wisconsin (42-30)
Illinois (40-32)
Rutgers (39-33)
Michigan (38-34)
Northwestern (38-34)
Indiana (36-36)
Ohio State (36-36)
Michigan State (35-37)
Nebraska (35-37)
Penn State (35-37)
Purdue (34-38)
Maryland (33-39)
Minnesota (32-40)
Iowa (31-41)
The numbers in parentheses are the combined opponent records