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GLOUCESTER, ENGLAND - OCTOBER 11: Amanaki Mafi of Japan celebrates scoring their third try during the 2015 Rugby World Cup Pool B match between USA and Japan at Kingsholm Stadium on October 11, 2015 in Gloucester, United Kingdom. (Photo by Bryn Lennon/Getty Images)

GLOUCESTER, ENGLAND - OCTOBER 11:  Amanaki Mafi of Japan celebrates scoring their third try during the 2015 Rugby World Cup Pool B match between USA and Japan at Kingsholm Stadium on October 11, 2015 in Gloucester, United Kingdom.  (Photo by Bryn Lennon/Getty Images)