Event: Division 2

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Opponent Rating Result
James M Robinson 1903 0 - 1
Graham J Kershaw 1683 ½ - ½
Jim A Arbuckle 1733 1 - 0
Nathan Barnes 1829 1 - 0
Robert JV Davies 1738 ½ - ½
Graham J Kershaw 1683 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1762 = (10569 + 400 * (2 - 2)) / 6)

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