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The fourth Nations Cup tournament was played at the University of Northern Colorado, USA during July and August 2013 following on from the Under-20s competition which took place at Trent College, Long Eaton, England in early July. The tournaments included teams from the United States, South Africa, England and Canada.
4 points awarded for a win, 2 points for a draw, no points for a loss. 1 bonus point awarded for scoring four or more tries and 1 bonus point for losing by less than 7 points.