| Year | Debater | Record | Result |
|---|---|---|---|
| 2008 | David Bardan & Jeremy Clark | 1-4 | Did Not Clear |
| 2007 | David Bardan & Qiu Chen | 0-5 | Did Not Clear |
| 2006 | Qiu Chen & Kristi Kuhl | 0-5 | Did Not Clear |
| 2005 | Amery Kuhl & Jeff Ling | 2-3 | Did Not Clear |
| 2004 | Amery Kuhl & Rick Lonneman | 0-5 | Did Not Clear |
| 2003 | Blaine Anderson & Shanna Granstra | 1-4 | Did Not Clear |
| 2002 | Blainer Anderson & Dan Viessman | 1-5 | Did Not Clear |
| 1988 | Jennifer Dekker & Philip Ebeling | 3-1 | Semifinalist |
| 1980 | 3-1 | Quarterfinalist | |
| 1980 | 1-3 | Did Not Clear | |
| 1979 | 1-3 | Did Not Clear | |
| 1978 | Anne Crippen & Matt Entenza | Unknown | Did Not Clear |
| 1976 | Unknown | Did Not Clear | |
| 1975 | Unknown | Octafinalist | |
| 1974 | Unknown | Quarterfinalist | |
| 1973 | Unknown | Quarterfinalist | |
| 1972 | Unknown | Did Not Clear | |
| 1970 | 7-3 | 7th Place | |
| 1969 | 7-3 | 4th Place | |
| 1968 | 7-3 | 8th Place | |
| 1967 | 6-4 | 11st Place | |
| 1966 | 7-3 | 5th Place | |
| 1965 | 6-4 | 9th Place | |
| 1964 | 8-2 | 3rd Place | |
| 1963 | 8-2 | 3rd Place | |
| 1962 | 7-3 | 7th Place | |
| 1961 | 7-3 | 7th Place | |
| 1960 | 4-2 | 8th Place | |
| 1959 | 5-1 | 5th Place | |
| 1958 | 2-4 | 12nd Place | |
| 1956 | 2-4 | 13rd Place | |
| 1954 | Merdelle Dahlquist, Ginger Hallbeck, Gary Crippen & Burdell Doe | 4-2 | 5th Place |
| 1938 | Bob Hansburger & Payson Wolff | N/A | Finalist |
| 1935 | N/A | Quarterfinalist | |
| 1929 | Morey Hughes, Allen Thornton & Raymond Moreck | N/A | Quarterfinalist |