Event: Summer League Section 1

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Opponent Rating Result
Kamila Hryshchenko 2264 0 - 1
Derek A Sheppard 1720 1 - 0
John Thackray 1966 0 - 1
David J Hambly 1803 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1838 = (7753 + 400 * (1 - 2)) / 4)

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