I can see a possibility of the B1G regular season ending with 5 teams -- IU, Ohio St, Minny, Rutgers and Illinois -- all with an 8-12 record. Look at the W-L records currently and the games left for each team:
Ohio State 8-10 @NW, WIS
Minnesota 8-10 PUR, @MD
Rutgers 7-11 PSU, @IU
Illinois 7-11 IU, @PSU
IU 6-12 @ILL, RUTG
Ohio State 8-10 @NW, WIS
Minnesota 8-10 PUR, @MD
Rutgers 7-11 PSU, @IU
Illinois 7-11 IU, @PSU
IU 6-12 @ILL, RUTG