Event: 560 Max

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Opponent Rating Result
Kim T Gilbert 119 0 - 1
Philip C Maybury 137 0 - 1
Kim T Gilbert 119 0 - 1
Philip C Maybury 137 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-72 = (512 + 400 * (1 - 3)) / 4)

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