| Year | Debater | Record | Result |
|---|---|---|---|
| 1986 | Mary Bessinger & Yokum Taku | 2-2 | Octafinalist |
| 1985 | Andrew Graham & John Benson | Unknown | Semifinalist |
| 1985 | Tami Nading & Yokum Taku | Unknown | Octafinalist |
| 1984 | Andy Graham & Yokum Taku | 1-3 | Did Not Clear |
| 1982 | 1-3 | Did Not Clear | |
| 1982 | 2-2 | Octafinalist | |
| 1981 | 2-2 | Did Not Clear | |
| 1978 | Mark Melberg & Tim Taylor | Unknown | Semifinalist |
| 1978 | John Hedenstrom & John Ratnaswamy | Unknown | Semifinalist |
| 1977 | Unknown | Did Not Clear | |
| 1976 | Unknown | Did Not Clear | |
| 1975 | Unknown | Finalist | |
| 1974 | Unknown | Champion | |
| 1973 | Unknown | Semifinalist | |
| 1972 | Unknown | Did Not Clear | |
| 1969 | 6-4 | 12nd Place | |
| 1968 | 7-3 | 7th Place | |
| 1967 | 8-2 | 4th Place | |
| 1966 | 7-3 | 2nd Place | |
| 1965 | 6-4 | 7th Place | |
| 1964 | 10-0 | 1st Place | |
| 1963 | 6-4 | 7th Place | |
| 1962 | 5-5 | 11st Place | |
| 1961 | 8-2 | 3rd Place | |
| 1960 | 6-0 | 1st Place | |
| 1959 | 3-3 | 8th Place | |
| 1957 | 5-1 | 2nd Place |