Norman produced a memorable performance to triumph in Eugene last year after a succession of career disappointments, including a shock fifth-place finish in the Tokyo Olympic final. "Unfortunately I will not be defending my title at the 2023 World champs," Norman said in an Instagram post. Norman had scarcely competed this year and withdrew from the LA Grand Prix in May after finishing eighth in the 200m at the Doha Diamond League meet. McLaughlin-Levrone, who broke her own world record to win the 400m hurdles last year, had been expected to compete in the flat event. Reporting by Amy Tennery in New York; Editing by Ken FerrisOur Standards: The Thomson Reuters Trust Principles.

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Persons: Michael Norman, Aleksandra Szmigiel, Norman, Eugene, I’ve, Sydney McLaughlin, Levrone, McLaughlin, Amy Tennery, Ken Ferris Organizations: Hayward Field, Tokyo Olympic, LA, Prix, Doha Diamond League, Thomson Locations: Eugene , Oregon, U.S, Budapest, New York