Event: NSDCA Division 1

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Opponent Rating Result
David I Hulme 1764 0 - 1
Harry Gardiner 1876 0 - 1
Philip J Cattermole 1795 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1412 = (5435 + 400 * (0 - 3)) / 3)

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