Wellington Sevens: Sonny Bill Williams learns lessons in dramatic NZ victory

Photos: All Blacks retain title
Sonny Bill Williams takes a selfie with fans during the cup final against South Africa at the Wellington Sevens.
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Photos: All Blacks retain title
Williams celebrated his debut in the sevens format as the All Blacks won the tournament for the third year in a row to get off the mark in this season's World Series.
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Photos: All Blacks retain title
South Africa, which won the previous round in Cape Town in December, rocked the home side from the start and took a 14-0 lead through tries to captain Philip Snyman and Rosko Specman (here tackling Gillies Kaka).
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Photos: All Blacks retain title
Akira Ioane, once heralded as "the next Jonah Lomu," kept New Zealand in the game with a touchdown of his own and superb try-saving tackle.
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Photos: All Blacks retain title