Imagine being world class in your chosen career and tossing it in to try and be just as good in another field. When Olympic gold medallist Charlotte Caslick switched from sevens rugby to the long form version it was an intoxicating story. But there's been a plot twist. A nasty ankle injury has her racing the clock for the World Cup and it's a tournament that has enormous stakes for the game in Australia. Featured: Charlotte Caslick, Wallaroos player. Amanda Shalala, senior reporter, ABC Sport.    

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