Event: Two West

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Opponent Rating Result
Ronan Kelly 1660 ½ - ½
Ljubomir Koncar 1200 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1630 = (2860 + 400 * (1 - 0)) / 2)

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Opponent Rating Result
Daniel Polatajko 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

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