Event: Division 2

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Opponent Rating Result
Ella Gayes 120 1 - 0
Michael A Boswell 120 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

520 = (240 + 400 * (2 - 0)) / 2)

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Opponent Rating Result
Louisa M Swarbrook 120 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-280 = (120 + 400 * (0 - 1)) / 1)