| Year | Debater | Record | Result |
|---|---|---|---|
| 2013 | Madeleine Hage & Sam Lagerstrom | Did not Compete | |
| 2013 | Alan Peck & Anja Beth Swoap | 2-3 | Did Not Clear |
| 2012 | Mimi Sergent-Leventhal & Erin Sielaff | 5-0 | Champion |
| 2012 | Dustin Meyers-Levy & Jon Yang | 5-0 | Quarterfinalist |
| 2011 | Mimi Sergent-Leventhal & Erin Sielaff | 5-0 | Semifinalist |
| 2011 | Dustin Meyers-Levy & Jon Yang | 3-2 | Quarterfinalist |
| 2010 | Trevor Aufderheide, Nick Khatri & Annie Dehnel (Alt) | 4-1 | Finalist |
| 2010 | Erin Sielaff, Mimi Sergent-Leventhal & Dustin Meyers-Levy (Alt) | 3-2 | Did Not Clear |
| 2009 | Nick Khatri, Hannah Nelson & Trevor Aufderheide (Alt) | 3-2 | Did Not Clear |
| 2008 | Justin Moor & Rohan Sadagopal | 3-2 | Did Not Clear |
| 2007 | Logan Chin & Doug Gschneidner | 3-2 | Finalist |
| 2007 | Kevin Milne & Justin Moor | 3-2 | Quarterfinalist |
| 2006 | Logan Chin & Doug Gschneidner | 4-1 | Quarterfinalist |
| 2006 | Maggie Carnahan & Kevin Milne | 2-3 | Did Not Clear |
| 2005 | Grant Dasher & Nathan Elliot | 5-0 | Champion |
| 2005 | Mark Freudenheim & Niko Karetnyi | 4-1 | Quarterfinalist |
| 2004 | Nick Haschka & Rishi Puram | 4-1 | Finalist |
| 2004 | Matthew Fishman & Arielle Lasky | 2-3 | Did Not Clear |
| 2003 | Joe Dumond & Rishi Puram | 4-1 | Finalist |
| 2003 | Eric Fish & Andrew James | 5-0 | Semifinalist |
| 2002 | Leah Litman & Alex Thiele | 5-1 | Champion |
| 2002 | Lauren Capp & Andrew James | 3-3 | Did Not Clear |
| 2001 | Kelly Brooks & Sid Puram | 3-3 | Did Not Clear |
| 2001 | Sam Gill & Brendan O'Connor | 4-2 | Quarterfinalist |
| 2000 | Kelly Brooks & Davis Parker | 3-3 | Did Not Clear |
| 2000 | Sam Gill & Sid Puram | 3-3 | Did Not Clear |
| 1999 | Sam Gill & Sid Puram | 4-2 | Semifinalist |
| 1994 | Carl Engstrom & Andrew Stiehm | Unknown | Quarterfinalist |
| 1993 | Michelle Drake & Sheila Peterson | 3-1 | Semifinalist |
| 1993 | Carl Engstrom & Andrew Stiehm | 2-2 | Octafinalist |
| 1992 | Michelle Drake & Sheila Peterson | 2-2 | Octafinalist |
| 1992 | Andrew Hansell & Michael Moesenthin | 3-1 | Octafinalist |
| 1990 | Chris Hondl & Valerie Struthers | 5--1 | Did Not Clear |
| 1990 | Mike Booher & Brandon Lujan | 3-1 | Semifinalist |
| 1983 | 2-2 | Did Not Clear | |
| 1982 | 4-0 | Semifinalist | |
| 1982 | 2-2 | Octafinalist | |
| 1972 | Unknown | Did Not Clear | |
| 1971 | Unknown | Champion | |
| 1968 | 6-4 | 10th Place | |
| 1967 | 9-1 | 2nd Place |