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CARDIFF, WALES - SEPTEMBER 23: Referee John Lacey shows Campese Ma'afu of Fiji a yellow card during the 2015 Rugby World Cup Pool A match between Australia and Fiji at the Millennium Stadium on September 23, 2015 in Cardiff, United Kingdom. (Photo by Dan Mullan/Getty Images)

CARDIFF, WALES - SEPTEMBER 23:  Referee John Lacey  shows Campese Ma'afu of Fiji a yellow card during the 2015 Rugby World Cup Pool A match between Australia and Fiji at the Millennium Stadium on September 23, 2015 in Cardiff, United Kingdom.  (Photo by Dan Mullan/Getty Images)