Event: June Swiss

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Opponent Rating Result
Jim McAvoy 1747 0 - 1
Colin R Payne 1636 1 - 0
Andrew D Hartland 1813 0 - 1
Larysa Klepikovska 1489 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1471 = (6685 + 400 * (1 - 3)) / 4)

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