| Year | Debater | Record | Result |
|---|---|---|---|
| 2002 | Jason Botterill & Caitlin Hull | 2-4 | Did Not Clear |
| 2001 | Katie Neisius & Luke Scripter | 4-2 | Quarterfinalist |
| 1997 | Andrew Cheyne & Margaret Luger | 4-2 | Quarterfinalist |
| 1997 | Claire Luger & Megan Peterson | 4-2 | Semifinalist |
| 1996 | Kelli Justesen & Nicole Wolfbauer | 4-2 | Quarterfinalist |
| 1996 | Andrew Cheyne & Heather Nelson | 2-4 | Did Not Clear |
| 1995 | Mike Kloster & Sarah Sicheneder | 5-1 | Semifinalist |
| 1995 | Robyn Peterson & Chris Wheatley | 5-1 | Quarterfinalist |
| 1994 | Don Berry & Ryan Scott | Unknown | Quarterfinalist |
| 1994 | Mike Kloster & A.J. Lindell | Unknown | Did Not Clear |
| 1993 | Andrew Kloster & Erin Mathern | 3-1 | Finalist |
| 1992 | Mike Anderson & Brian Kunkel | 3-1 | Octafinalist |
| 1992 | Andrew Kloster & Erin Mathern | 0-4 | Did Not Clear |
| 1990 | Janelle Daniels & Joleen Fahey | 1-3 | Did Not Clear |
| 1989 | 2-2 | Octafinalist | |
| 1988 | Adam Blons & Monica Houle | 3-1 | Octafinalist |
| 1988 | Christy McEnerney & Cyndi Rapacke | 0-4 | Did Not Clear |
| 1987 | Ray Smith & Mark Stacy | 3-1 | Quarterfinalist |
| 1986 | Jeff Arnholt & Ray Smith | 2-2 | Semifinalist |
| 1985 | Kim Hult & Suzy Ulvin | Unknown | Octafinalist |
| 1984 | Jodie Brown & Kim Hult | 2-2 | Octafinalist |
| 1981 | 3-1 | Octafinalist | |
| 1980 | 3-1 | Octafinalist | |
| 1979 | 3-1 | Semifinalist | |
| 1978 | Carol Coxon & Jeff Hansen | Unknown | Did Not Clear |
| 1977 | Unknown | Did Not Clear | |
| 1976 | Unknown | Semifinalist | |
| 1975 | Unknown | Octafinalist | |
| 1972 | Unknown | Did Not Clear | |
| 1970 | 5-5 | 14th Place | |
| 1969 | 4-6 | 16th Place |