Event: John Woolley Rapid

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Opponent Rating Result
Abu Hasan 1395 1 - 0
Abu Hasan 1395 1 - 0
Nigel Colter 1840 0 - 1
Nigel Colter 1840 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1618 = (6470 + 400 * (2 - 2)) / 4)

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