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The year end ATP number one for 2017 will be Roger Federer or Rafael Nadal

Created by gurgus on 2017-08-09; known on 2017-11-19; judged right by gurgus on 2017-11-20.

  • gurgus estimated 100% on 2017-08-09
  • gurgus   judged this prediction right on 2017-11-20.