| Year | Debater | Record | Result |
|---|---|---|---|
| 2013 | Lee Dolla & Eli Gumnit | 2-3 | Did Not Clear |
| 2013 | Matthew Lauer & Sophia Rossini | 1-4 | Did Not Clear |
| 2012 | Alex Dahl & Ben Dion | 2-3 | Did Not Clear |
| 2005 | Michael Barany & Zhaoquan Wang | 1-4 | Did Not Clear |
| 2000 | Diane Detournay & Nick Conti-Masanz | 1-5 | Did Not Clear |
| 1999 | Diane Detournay & Emmeline Liu | 4-2 | Quarterfinalist |
| 1999 | Katie Hassing & Matt Jochmans | 1-5 | Did Not Clear |
| 1998 | Diane Detournay & Emmeline Liu | 3-3 | Did Not Clear |
| 1995 | Apurv Kamath & Freya Thimsen | 4-2 | Quarterfinalist |
| 1994 | David Gates & Apurv Kamath | Unknown | Did Not Clear |
| 1994 | Abby Boehm & Freya Thimsen | Unknown | Did Not Clear |
| 1993 | Jed Moeller & Sarah Staveteig | 3-1 | Quarterfinalist |
| 1992 | Sanjay Kumar & Paul Staveteig | 4-0 | Champion |
| 1992 | Jed Moeller & Patrick Pederson | 2-2 | Quarterfinalist |
| 1991 | Eric Doherty & Sanjay Kumar | 4-0 | Finalist |
| 1991 | Patrick Pederson & Paul Staveteig | 2-2 | Quarterfinalist |
| 1990 | Eric Doherty & Nicole Hoover | 2-2 | Octafinalist |
| 1990 | Jim Beal & Jennifer Yu | 1-3 | Did Not Clear |
| 1989 | 3-1 | Quarterfinalist | |
| 1989 | 1-3 | Did Not Clear | |
| 1988 | Kathleen Kerr & Kristin Shaw | 1-3 | Did Not Clear |
| 1987 | David Bombardier & Kristen Shaw | 3-1 | Octafinalist |