Jason Pine: Sportstalk host on Kiwi Erika Fairweather taking bronze at World Aquatics Championships - Heather du Plessis-Allan Drive

Swimmer Erika Fairweather welcomes the strength of her 400-metre freestyle peers in the build-up to next year's Paris Olympics.

The 19-year-old's claimed bronze at the world championships in Japan, becoming the fifth woman to go under four minutes in the discipline.

Sportstalk host Jason Pine explains this accomplishment further.

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