Event: Club Friendlies

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Opponent Rating Result
Mark Howard 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-400 = (0 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Julian N Hawthorne 119 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

119 = (119 + 400 * (0 - 0)) / 1)