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| | Winners | | |
| Japan | | 3 | | |
| Samoa | | 2 | | |
| Italy | | 2 | | |
| United States | | 1 | | |
| Uruguay | | 1 | | |
| Georgia | | 1 | | |
| Fiji | | 1 | | |
| Romania | | 1 | | |
| | | | |
| Year | Host | Winner | Score | Runner-up |
| 2008 | Chile | Uruguay | 20 – 8 | Chile |
| 2009 | Kenya | Romania | 25 – 13 | United States |
| 2010 | Russia | Italy | 36 – 7 | Japan |
| 2011 | Georgia | Samoa | 31 – 24 | Japan |
| 2012 | United States | United States | 37 – 33 | Japan |
| 2013 | Chile | Italy | 45 – 23 | Canada |
| 2014 | Hong Kong | Japan | 35 – 10 | Tonga |
| 2015 | Portugal | Georgia | 49 – 24 | Canada |
| 2016 | Zimbabwe | Samoa | 38 – 32 (aet) | Spain |
| 2017 | Uruguay | Japan | 14 – 3 | Portugal |
| 2018 | Romania | Fiji | 58 – 8 | Samoa |
| 2019 | Brazil | Japan | 35 – 34 | Portugal |
| 2020 | Spaim | | | |
