Event: Essex Summer Rapid Knockout

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Opponent Rating Result
Kevin Bowmer 2035 1 - 0
Kevin Bowmer 2035 ½ - ½
John H Hodgson 2185 ½ - ½
John H Hodgson 2185 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2110 = (8440 + 400 * (1 - 1)) / 4)

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