Event: The Friendly League

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

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

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Opponent Rating Result
Jordan Thyssen 0 0 - 1
Yousaf Ahmed 1428 0 - 1
Paul Curran 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

76 = (1428 + 400 * (0 - 3)) / 3)