Event: Essex Summer Rapid Knockout

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Opponent Rating Result
Terry D Whitton 1896 1 - 0
Terry D Whitton 1896 0 - 1
Peter Jaszkiwskyj 1958 ½ - ½
Peter Jaszkiwskyj 1958 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1827 = (7708 + 400 * (1 - 2)) / 4)

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