Event: Division One

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Opponent Rating Result
Philip Purcell 184 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-216 = (184 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Derek A Stockhall 130 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

130 = (130 + 400 * (0 - 0)) / 1)