Factual Summary: Cameron McEvoy of Australia swam the men's 50‑meter freestyle in 20.88 seconds at the China Open in Shenzhen, breaking the 17‑year‑old world record. The previous mark of 20.91 seconds was set by Brazil's César Cielo in 2009 during the now‑banned super‑suit era.
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The article reports a verifiable world‑record achievement with neutral language and primary AP sourcing, earning top scores across all quality dimensions.