Football too. Since the BCS started the B1G has TWO football titles. That is over 25 seasons. Even worse they have ONE in the last 20 and ZERO in the last 8.
Before the BCS they last won an outright title (both polls) in 1968. That is 54 years and TWO outright titles (Michigan split in 1997). Take away Ohio State and the B1G has ONE split title in the last 56 seasons. In fairness they have added teams with titles to the league (USC, Nebraska, Penn State).
Edit
So in both FB and BBall the 16 schools that will be in the B1G have ONE title combined in the last 18 years. Even the 6 schools they added haven't won a thing over that span. Maryland won in BBall in 2002 and USC won in FB in 2004.