Event: Division 2

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Opponent Rating Result
Rob Ensor 1703 0 - 1
John Hart 1699 0 - 1
Ray M Sayer 1439 ½ - ½
Elena Cavazzoni 1567 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1402 = (6408 + 400 * (0 - 2)) / 4)

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