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South Africa scored six tries in a 40-21 triumph over New Zealand in the final of the USA Sevens in Las Vegas.
Branco du Preez scored two tries for South Africa, who had earlier reached the final with a 12-7 semi-final win over defending US
champions Samoa.
South Africa's victory made them the fifth side to win a Series title this season.
With the Hong Kong Sevens next up, March 22-24, New Zealand still lead the standings with 96 points ahead of South Africa on
73, Samoa on 71 and Fiji on 66.
