Sydney McLaughlin breaks own 400m hurdles world record at US championships

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Olympic champion Sydney McLaughlin broke her own world record in the 400m hurdles at the US track and field championships on Saturday.

McLaughlin flashed a broad smile when her time was announced, then gave a thumbs-up. She crossed the finish line at Hayward Field in 51.41 seconds, breaking her own record of 51.46sec set last year at the Tokyo Olympics, where she won gold.