| Argentina (3) |
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| Baez, Sebastian | | Cerundolo, Francisco | | Etcheverry, Tomas Martin |
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| Duckworth, James |
| | | Canada (2) |
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| Lehecka, Jiri |
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| Rune, Holger |
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| Altmaier, Daniel |
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| Kym, Jerome | | Stricker, Dominic | | Wawrinka, Stan |
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| Shelton, Ben |
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