Event: Rook 2019-20

Opponent Rating Result
Alex B Taylor 163 1 - 0
Anthony RJ Higgs 180 ½ - ½
David N Roberts 170 ½ - ½
Mark Broom 193 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

177 = (706 + 400 * (1 - 1)) / 4)

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