| Year | Debater | Record | Result |
|---|---|---|---|
| 2008 | Thomas Freeman & Luke Gruenhagen | 0-5 | Did Not Clear |
| 2005 | Brian Agre & Adam Pelkey | 1-4 | Did Not Clear |
| 2002 | Pat Freeman & Rob Ocel | 2-4 | Did Not Clear |
| 2001 | Pat Freeman & Rob Ocel | 3-3 | Did Not Clear |
| 2000 | Alexis Bylander & Dana Moore | 2-4 | Did Not Clear |
| 1999 | Alexis Bylander & Dana Moore | 2-4 | Did Not Clear |
| 1991 | Creighton Brandt & Patrick Kelkar | 2-2 | Semifinalist |
| 1990 | Chad Bernard & Pat Kelkar | 3-1 | Quarterfinalist |
| 1989 | 1-3 | Did Not Clear | |
| 1988 | Dave Frenz & Tony Maras | 3-1 | Semifinalist |
| 1988 | Chris Kelkar & Lonny Smith | 2-2 | Quarterfinalist |
| 1987 | Steffen Johnson & Chris Kelkar | 3-1 | Octafinalist |
| 1987 | Tony Maras & Lonny Smith | 1-3 | Did Not Clear |
| 1986 | Joshua Baltrell & Steffen Johnson | 2-2 | Octafinalist |
| 1985 | Dan Boberg & Judy Jackson | Unknown | Did Not Clear |
| 1984 | Dan Boberg & Kent Radspinner | 0-4 | Did Not Clear |
| 1984 | Gilbert Dewes & Judy Jackson | 0-4 | Did Not Clear |
| 1983 | 0-4 | Did Not Clear | |
| 1982 | 1-3 | Did Not Clear | |
| 1979 | 2-2 | Did Not Clear | |
| 1979 | 2-2 | Quarterfinalist | |
| 1978 | Peggy Arveson & Tony Schultz | Unknown | Did Not Clear |
| 1978 | Dave Hansen & Pam Siegel | Unknown | Did Not Clear |
| 1977 | Unknown | Did Not Clear | |
| 1977 | Unknown | Did Not Clear | |
| 1976 | Unknown | Did Not Clear | |
| 1970 | 5-5 | 17th Place | |
| 1969 | 7-3 | 8th Place | |
| 1968 | 2-8 | 23rd Place | |
| 1966 | 3-7 | 23rd Place | |
| 1965 | 5-5 | 13rd Place | |
| 1964 | 5-5 | 13rd Place | |
| 1963 | 5-5 | 12nd Place | |
| 1962 | 3-7 | 20th Place | |
| 1961 | 8-2 | 4th Place | |
| 1960 | 4-2 | 9th Place | |
| 1959 | 2-4 | 13rd Place | |
| 1954 | Bill Madden, Jim Nolan, Ted Imgrund & Nona Fallon | 2-4 | 11st Place |
| 1952 | 1-5 | 14th Place | |
| 1913 | Nora Barron, Werner Lund & Jean Mosier | N/A | Quarterfinalist |
| 1912 | N/A | Quarterfinalist |