1970 | 35 Episodes
Season 0 of It's a Knockout premiered on December 26, 1970.
1966 | 7 Episodes
Season 1 of It's a Knockout premiered on August 7, 1966.
1967 | 12 Episodes
Season 2 of It's a Knockout premiered on May 14, 1967.
1968 | 13 Episodes
Season 3 of It's a Knockout premiered on May 12, 1968.
1969 | 11 Episodes
Season 4 of It's a Knockout premiered on May 14, 1969.
1970 | 14 Episodes
Season 5 of It's a Knockout premiered on April 30, 1970.
1971 | 14 Episodes
Season 6 of It's a Knockout premiered on April 21, 1971.
1972 | 14 Episodes
Season 7 of It's a Knockout premiered on May 19, 1972.
1973 | 14 Episodes
Season 8 of It's a Knockout premiered on May 18, 1973.
1974 | 13 Episodes
Season 9 of It's a Knockout premiered on May 3, 1974.
1975 | 15 Episodes
Season 10 of It's a Knockout premiered on May 23, 1975.
1976 | 16 Episodes
Season 11 of It's a Knockout premiered on May 21, 1976.
1977 | 16 Episodes
Season 12 of It's a Knockout premiered on April 22, 1977.
1978 | 16 Episodes
Season 13 of It's a Knockout premiered on April 21, 1978.
1979 | 17 Episodes
Season 14 of It's a Knockout premiered on May 11, 1979.
1980 | 17 Episodes
Season 15 of It's a Knockout premiered on May 9, 1980.
1981 | 15 Episodes
Season 16 of It's a Knockout premiered on May 29, 1981.
1982 | 15 Episodes
Season 17 of It's a Knockout premiered on May 28, 1982.
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