Event: Division One

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Opponent Rating Result
Dave J Ledger 205 ½ - ½
Robert S Eames 206 0 - 1
David J Grant 203 ½ - ½
Tony Niccoli 188 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

101 = (802 + 400 * (0 - 1)) / 4)

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