Event: Rapid League

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Opponent Rating Result
Ron Usharovsky 1772 0 - 1
Ron Usharovsky 1772 1 - 0
Cathal Lucey 1840 ½ - ½
Cathal Lucey 1840
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1795 = (5384 + 400 * (1 - 1)) / 3)

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