Event: 6-Board Division 2

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Opponent Rating Result
Keith Porteous 1649 0 - 1
Neil Hambly 1596 1 - 0
Andrew Donegan 1428 0 - 1
Bruce R Oliver 1618 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1373 = (6291 + 400 * (1 - 3)) / 4)

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