The 20-win improvement broke a Division I record set by Ohio State in 1998-99 when they improved by 19 wins*. The school record was 17 wins (1998-99 with 15 wins to 1999-2000 with 32 wins).
*Note that Ohio State's wins in 1998-99 were vacated, so that is not official, but I think vacating wins is stupid. The games actually happened.
*Note that Ohio State's wins in 1998-99 were vacated, so that is not official, but I think vacating wins is stupid. The games actually happened.