Event: Friendly Rapid

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Opponent Rating Result
Robert Mills 1192 0 - 1
Rene Butler 1355 0 - 1
Ethan Turner Peters 1250 0 - 1
Ethan Turner Peters 1250 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

862 = (5047 + 400 * (0 - 4)) / 4)

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