Event: Silver Rook

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Opponent Rating Result
Kenneth L Marsden 92 1 - 0
Richard Hersey 117 0 - 1
Paul Masiak 97 ½ - ½
Ethan Stuckey 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

177 = (306 + 400 * (2 - 1)) / 4)

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