MANCHESTER, England :Sydney McLaughlin-Levrone will be making a bold shift at this month's World Athletics Championships by trading her signature 400 metres hurdles event for the flat 400 in a move reflecting her competitive spirit and insatiable hunger for growth.

The 26-year-old American has already rewritten the hurdles record books, with six world records in her primary event and two Olympic and one world titles.

But this season she ditched the event for the flat 400, where she is not the runaway favourite. It has been a learning curve, but McLaughlin-Levrone said she had the patience required to chase greatness in a new discipline.

"Over the past few years, the performances (I've) put on have created an appetite for records whenever I step on the track," she told reporters on a vid

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