Event: County Challenge

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Opponent Rating Result
Lakshan Siddharth 0 ½ - ½
Anthony Garrood 1638 0 - 1
Pete Meadows 1735 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1124 = (3373 + 400 * (1 - 1)) / 3)

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