Event: Richardson Cup

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Opponent Rating Result
Andrew Nettleship 1556 0 - 1
Hashim Tuffaha 1504 1 - 0
Jim Davis 1922 1 - 0
Jonathan P Nelson 2232 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1804 = (7214 + 400 * (2 - 2)) / 4)

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