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

    Updated 1331 GMT (2131 HKT) February 1, 2016

    Sonny Bill Williams takes a selfie with fans during the cup final against South Africa at the Wellington Sevens.
    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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    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.
    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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    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).
    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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    Akira Ioane, <a href="http://www.cnn.com/2014/03/26/sport/akira-ioane-new-zealand-rugby-sevens/" target="_blank">once heralded as "the next Jonah Lomu,"</a> kept New Zealand in the game with a touchdown of his own and superb try-saving tackle.
    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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    An error by 2015 Rugby World Cup winner Williams allowed fellow 15-a-side convert Francois Hougaard to set up Seabelo Senatla for South Africa's third try.
    Photos: All Blacks retain title
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