Event: The Friendly League

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Opponent Rating Result
Goodchild Ndou 0 0 - 1
John Moxham 0 0 - 1
Neil Taylor 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

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

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Opponent Rating Result
Peter Logan 1555 0 - 1
Donna Chadwick 1313 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1034 = (2868 + 400 * (0 - 2)) / 2)