Event: E Division

Opponent Rating Result
Steven M Flaherty 1606 ½ - ½
Stuart Sumner 1537 1 - 0
Sergio Russo 1454 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1799 = (4597 + 400 * (2 - 0)) / 3)

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