Event: D Division

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Opponent Rating Result
Paul Doherty 1759 0 - 1
Tom Gideonse 1576 1 - 0
Robin IR Wilding 1836 0 - 1
Andrew Morilla 1400 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1543 = (6571 + 400 * (1 - 2)) / 4)

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