Sport's power couple: 'When we play for a bigger purpose we play better'

Aged 26, Julie Ertz already knows what it is like to win a World Cup. The defensive midfielder, the second-youngest member of the US squad i...

Aged 26, Julie Ertz already knows what it is like to win a World Cup. The defensive midfielder, the second-youngest member of the US squad in 2015, can talk about the joy of winning the biggest prize in women's soccer, of how onerous a month-long tournament can be and how becoming a world champion "makes you hungry for more."

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