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John Duncan
Canada
Personal Bests
Best times from available individual swims and official relay lead-offs. Career coverage may be incomplete.
200 Butterfly
1973 1st FINA World Championships · Belgrade · Meet 31 Aug–9 Sep 1973
1973 1st FINA World Championships · Belgrade · Meet 31 Aug–9 Sep 1973
—2:12.39All Results 1 swims · 1 meets
Meet dates describe the competition. Race dates are shown per swim where available.