Event: Rapid Play League

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Opponent Rating Result
Matt Jones 1724 0 - 1
Matt Jones 1724 0 - 1
Samuel J Playford 1544 1 - 0
Samuel J Playford 1544 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1534 = (6536 + 400 * (1 - 2)) / 4)

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