Event: Watkinsons League

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Opponent Rating Result
Dave Gray 1680 ½ - ½
Isaac Fossey 1784 0 - 1
Dave Colledge 1710 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1725 = (5174 + 400 * (1 - 1)) / 3)

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