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Event: Inter

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Opponent Rating Result
Russell G Granat 213 1 - 0
Jamie Morgan 157 1 - 0
David N Roberts 171 ½ - ½
Mike Roberts 178 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

280 = (719 + 400 * (2 - 1)) / 4)

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