Event: Div 2 (Cracknell 23)

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Opponent Rating Result
Jack Carmody 1278 0 - 1
Adam Majewski 1375 ½ - ½
Okan Kasim 1036 0 - 1
Pete Moseley 0 0 - 1
Okan Kasim 1124 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

643 = (4813 + 400 * (0 - 4)) / 5)

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