1984 – University of Nebraska
1985 – Iowa State University
1986 – University of Missouri Columbia
1987 – Oklahoma State University
1988 – University of Oklahoma
1989 – University of Missouri Columbia
1990 – University of Nebraska at Kearney
1991 – University of Kansas
1992 – University of Arkansas
1993 – Southwest Missouri State University
1994 – North Dakota State University
***** & University of North Dakota
1995 – Saint Louis University
1996 – Iowa State University
1997 – University of Nebraska
1998 – University of Northern Colorado
1999 – University of Kentucky
2000 – University of Kansas
***** & University of Missouri Columbia
2001 – The Ohio State University
2002 – Georgia Tech
2003 – University of Oklahoma
2004 – Saint Louis University
2005 – Southwest Missouri State University
2006 – University of Missouri, Columbia
2007 – Iowa State University
2008 – Texas A&M University
2009 – Ohio State University
2010 – Oklahoma State University
2011 – University of Denver
2012 – West Virginia University
2013 – University of Arkansas
2014 – Texas Tech University
2015 – University of Kansas
2016 – University of Wisconsin
2017 – University of Oklahoma
2018 – University of Arkansas
2019 – University of Missouri
2022 – Texas A&M University
2023 – The Ohio State University