Event: WMA Summer League Division 2

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Opponent Rating Result
Julie C Wilson 150 1 - 0
David Waud 141 0 - 1
Julie C Wilson 150 1 - 0
David Waud 141 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

346 = (582 + 400 * (3 - 1)) / 4)

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