Event: Division Three

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Opponent Rating Result
Jason Obihara 143 0 - 1
Christopher Tapay 100 1 - 0
Kennan Kesterson 148 1 - 0
Mary Helen Deans 134 ½ - ½
Mark Davey 188 0 - 1
Savas Marin Stoica 99 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

69 = (812 + 400 * (2 - 3)) / 6)

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Opponent Rating Result
Harvey Grewal 134 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-266 = (134 + 400 * (0 - 1)) / 1)