| Year | Debater | Record | Result |
|---|---|---|---|
| 2008 | Joe Skaggs Jr. & Michelle Stanley | 2-3 | Did Not Clear |
| 2008 | Ashley McVay & Seiko Shastri | 0-5 | Did Not Clear |
| 2007 | Ashley McVay & Joe Skaggs Jr. | 0-5 | Did Not Clear |
| 2007 | Mia Bonitto & Michelle Stanley | 1-4 | Did Not Clear |
| 2006 | Sarah Mogen & Rachel Sternhagen | 4-1 | Semifinalist |
| 2006 | Mia Bonitto & Dana Rognlie | 2-3 | Did Not Clear |
| 2005 | Sarah Mogen & Rachel Sternhagen | 2-3 | Did Not Clear |
| 2005 | Mike Bonitto & Dana Rognlie | 1-4 | Did Not Clear |
| 2004 | Nick Sternhagen & Rachel Sternhagen | 4-1 | Quarterfinalist |
| 2003 | Matt Dahlen & Nick Sternhagen | 1-4 | Did Not Clear |
| 2001 | Maren Hulden & John Langdahl | 2-4 | Did Not Clear |
| 1983 | 0-4 | Did Not Clear | |
| 1981 | 0-4 | Did Not Clear | |
| 1980 | 0-4 | Did Not Clear | |
| 1976 | Unknown | Did Not Clear | |
| 1975 | Unknown | Did Not Clear | |
| 1974 | Unknown | Did Not Clear | |
| 1973 | Unknown | Octafinalist | |
| 1972 | Unknown | Did Not Clear | |
| 1971 | Unknown | Did Not Clear | |
| 1969 | 4-6 | 15th Place | |
| 1968 | 5-5 | 14th Place | |
| 1967 | 5-5 | 18th Place | |
| 1966 | 4-6 | 17th Place | |
| 1964 | 5-5 | 11st Place | |
| 1963 | 6-4 | 11st Place | |
| 1962 | 4-6 | 17th Place | |
| 1951 | 2-4 | 9th Place | |
| 1945 | Eugene Lee & Robert Lilla | N/A | Finalist |
| 1941 | N/A | Quarterfinalist | |
| 1940 | N/A | Quarterfinalist | |
| 1927 | N/A | Unknown | |
| 1911 | Isabelle Casey, Irene Thompson & Louis Wheeler | N/A | Semifinalist |
| 1910 | Lois Dart, Reuel Wije & James Sharp | N/A | Champion |