Event: The Friendly League

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Opponent Rating Result
Thomas Martin 0 0 - 1
Zachary Barton 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

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

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Opponent Rating Result
Jonathan Howarth 0 0 - 1
Con Carey 1575 0 - 1
Jordan Thyssen 1475 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

750 = (3050 + 400 * (0 - 2)) / 3)