Event: Max 560

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Opponent Rating Result
Gordon SG Christie 145 0 - 1
Mat Thompson 50 ½ - ½
Gordon SG Christie 145 0 - 1
Mat Thompson 50 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-3 = (390 + 400 * (1 - 2)) / 4)

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