Event: Calderdale 30

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Opponent Rating Result
Pete Leonard 0 1 - 0
Alec Ward 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

400 = (0 + 400 * (2 - 0)) / 2)

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Opponent Rating Result
David Shapland 0 0 - 1
David A Patrick 0 1 - 0
Karim Khan 0 ½ - ½
Gerald Cuaresma 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

100 = (0 + 400 * (2 - 1)) / 4)