| Year | Debater | Record | Result |
|---|---|---|---|
| 2002 | Anna Medina & Leilani Savitt | 1-5 | Did Not Clear |
| 2001 | Andrew Gisselquist & Julie Kaster | 3-3 | Did Not Clear |
| 2000 | Gabi Gillett & Maria Schriver | 3-3 | Did Not Clear |
| 1999 | Lena Gardner & Anjali Garg | 1-5 | Did Not Clear |
| 1999 | Ben Clark & Joe Kirchhof | 3-3 | Did Not Clear |
| 1998 | Sanjay Ramprasad & Jenny Rhein | 3-3 | Did Not Clear |
| 1998 | Ben Clark & Joe Kirchhof | 1-5 | Did Not Clear |
| 1997 | Isaac Rabinowitz & Sanjay Ramprasad | 2-4 | Did Not Clear |
| 1997 | Ben Clark & Christine Hagerman | 2-4 | Did Not Clear |
| 1996 | Andy Abruzzese & Celia Clark | 4-2 | Quarterfinalist |
| 1995 | Andy Abruzzese & Celia Clark | 3-3 | Did Not Clear |
| 1991 | Jason Carlson & Derek Hagland | 3-1 | Quarterfinalist |
| 1991 | Aaron Klemz & Jana Landon | 2-2 | Octafinalist |
| 1989 | 2-2 | Octafinalist | |
| 1989 | 2-2 | Octafinalist | |
| 1988 | Luke Samaha & Stephen Simon | 2-2 | Octafinalist |
| 1988 | Tony Alpert & Sherri Wolson | 2-2 | Octafinalist |
| 1987 | Luke Samaha & Sherri Wolson | 2-2 | Octafinalist |
| 1985 | Sandy Cohen & Ben Frisch | 2-2 | Octafinalist |
| 1970 | 8-2 | 1st Place | |
| 1969 | 7-3 | 3rd Place | |
| 1968 | 9-1 | 1st Place | |
| 1967 | 9-1 | 1st Place | |
| 1966 | 10-0 | 1st Place | |
| 1965 | 10-0 | 1st Place | |
| 1964 | 9-1 | 2nd Place | |
| 1963 | 8-2 | 2nd Place | |
| 1962 | 9-1 | 1st Place | |
| 1961 | 7-3 | 5th Place | |
| 1960 | 5-1 | 2nd Place | |
| 1959 | 6-0 | 1st Place | |
| 1958 | 5-1 | 2nd Place | |
| 1957 | 4-2 | 4th Place | |
| 1956 | 3-3 | 7th Place | |
| 1952 | 5-1 | 3rd Place |