Event: Calderdale 30

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Opponent Rating Result
Talal Ezzo 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-400 = (0 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Kevin Bairstow 0 0 - 1
Brendan Briggs 0 1 - 0
John Nicholson 0 1 - 0
Jacob A Westmoreland 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

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