Event: The Friendly League

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Opponent Rating Result
Martyn Hamer 2091 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1691 = (2091 + 400 * (0 - 1)) / 1)

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

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