Event: Mini League

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Opponent Rating Result
Pete Sheppard 1450 1 - 0
Tom Devlin 1510 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1680 = (2960 + 400 * (1 - 0)) / 2)

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Opponent Rating Result
S Neil Bolton 1354 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1754 = (1354 + 400 * (1 - 0)) / 1)