Event: U1650 Cup

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Opponent Rating Result
John Harvey 1337 0 - 1
Ashraf Elhusseiny 1500 0 - 1
Stephen Johnson 1500 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1312 = (4337 + 400 * (1 - 2)) / 3)

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