Event: Bremridge league

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Opponent Rating Result
Tim Paulden 183 0 - 1
Tim Paulden 183 0 - 1
John KF Stephens 189 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-215 = (555 + 400 * (0 - 3)) / 3)

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