Event: HDCA Summer League Section 2

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Opponent Rating Result
Nick Colley 78 ½ - ½
Malcolm Ogglesby 104 ½ - ½
Steve Donoghue 75 0 - 1
David J Gibson 114 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-107 = (371 + 400 * (0 - 2)) / 4)

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