Katsuki Ishihara (石原 勝記, Ishihara Katsuki; born March 10, 1939) is a retired Japanese freestyle swimmer who competed at the 1960 and 1964 Summer Olympics. In 1960, he won a bronze medal in the 4 × 100 m medley relay, by swimming for the Japanese team in the preliminary round. In 1964, his 4 × 100 m freestyle relay team finished in fourth place.
Source: “Katsuki Ishihara”, English Wikipedia (CC BY-SA 4.0), excerpt
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