Event: Division One

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Opponent Rating Result
David Hulme 1864 ½ - ½
Marcus Walsh 1929 0 - 1
Jon Turner 1843 ½ - ½
Steve F Tarr 1892 ½ - ½
Arjun Pyda 1777 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1861 = (9305 + 400 * (1 - 1)) / 5)

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