Event: U160

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Opponent Rating Result
Callum Welsh 154 ½ - ½
Keith Aiton 149 0 - 1
Z Zia Mohammed Quader 142 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-118 = (445 + 400 * (0 - 2)) / 3)

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