Event: NSDCA Division 2

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Opponent Rating Result
David I Hulme 1772 0 - 1
Chris Riley 1938 0 - 1
Alan E Thomason 1709 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1540 = (5419 + 400 * (0 - 2)) / 3)

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