| Year | Champion(s) | % Correct |
|---|---|---|
| 2018 | North Dakota State | 94%
|
| 2017 | North Dakota State | 94%
|
| 2013 | North Dakota State | 94%
|
| 2012 | North Dakota State | 94%
|
| 2015 | North Dakota State or Illinois State | 94%
|
| 2014 | North Dakota State or Illinois State | 94%
|
| 2011 | North Dakota State or Northern Iowa | 94%
|
| 2016 | North Dakota State or South Dakota State | 94%
|
| 1990 | Northern Iowa or Missouri State | 91%
|
| 2010 | Northern Iowa | 89%
|
| 2007 | Northern Iowa | 89%
|
| 2001 | Northern Iowa | 89%
|
| 1996 | Northern Iowa | 89%
|
| 1994 | Northern Iowa | 89%
|
| 1993 | Northern Iowa | 89%
|
| 1992 | Northern Iowa | 89%
|
| 1991 | Northern Iowa | 89%
|
| 1987 | Northern Iowa | 89%
|
| 1985 | Northern Iowa | 89%
|
| 1989 | Missouri State | 86%
|
| 2009 | Southern Illinois | 83%
|
| 2004 | Southern Illinois | 83%
|
| 1999 | Illinois State | 80%
|
| 2005 | Northern Iowa, Southern Illinois, or Youngstown State | 80%
|
| 2006 | Youngstown State | 77%
|
| 2000 | Western Illinois | 74%
|
| 1998 | Western Illinois | 74%
|
| 1997 | Western Illinois | 74%
|
| 1988 | Western Illinois | 74%
|
| 1986 | Eastern Illinois | 49%
|
| 2008 | Northern Iowa or Southern Illinois | 26%
|
| 1995 | Northern Iowa or Eastern Illinois | 23%
|
| 2003 | Northern Iowa or Southern Illinois | 23%
|
| 2002 | Western Illinois or Western Kentucky | 20%
|