Event: Finchley Cup

Opponent Rating Result
David Smith 1517 0 - 1
David Smith 1517 ½ - ½
Paul R Barclay 1780 1 - 0
Paul R Barclay 1780 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1749 = (6594 + 400 * (2 - 1)) / 4)

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