Event: Division 2

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Opponent Rating Result
Jim A Arbuckle 1550 0 - 1
Malcolm P Kingsley 1893 0 - 1
Tom A Barton 1908 ½ - ½
Andrew Swales 1765 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1479 = (7116 + 400 * (0 - 3)) / 4)

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