Event: Division One

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Opponent Rating Result
Lee A Grinsell 187 ½ - ½
Moin Uddin 150 1 - 0
John A Edge 178 1 - 0
Faraz Malik 157 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

268 = (672 + 400 * (2 - 1)) / 4)

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