Event: Division One

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Opponent Rating Result
Donald J Mason 2095 0 - 1
Steve F Tarr 1830 1 - 0
David Hulme 1884 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1936 = (5809 + 400 * (1 - 1)) / 3)

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