Event: Autumn OTB Division 4

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Opponent Rating Result
Richard Nurse 1743 0 - 1
Michael Oszczyk 1713 0 - 1
Roland Mihalovits 1100 ½ - ½
Matthew Hackett 1400 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1189 = (5956 + 400 * (0 - 3)) / 4)

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