Event: Eastman Cup

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Opponent Rating Result
Ilya Iyengar 2097 0 - 1
Robin Sarfas 1795 1 - 0
Andrew M Stone 2155 0 - 1
Andrew M Stone 2155 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1851 = (8202 + 400 * (1 - 3)) / 4)

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