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FUKUOKA, Japan — Mollie O'Callaghan and Qin Haiyang completed their sweeps at the swimming world championships. O'Callaghan won the women's 100-meter freestyle. The triumph made the 19-year-old Australian the first female swimmer ever to sweep the 100 and 200 freestyle golds at the same worlds. O'Callaghan set a world record while winning the 100 on Wednesday. Qin set a world record while winning the men's 200-meter breaststroke in 2 minutes, 5.48 seconds. The 24-year-old Chinese swimmer became the first man to sweep all three breaststroke events at the same worlds. He earlier won both the 50 and 100 breast.







