Event: NSDCA Division 2

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Opponent Rating Result
John R Booth 1869 ½ - ½
Gary P Smith 1856 0 - 1
Julian N Hawthorne 1707 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1811 = (5432 + 400 * (1 - 1)) / 3)

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