Event: Rapid Play League

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Opponent Rating Result
Paul Smith 1154 1 - 0
Paul Smith 1154 1 - 0
Chris J Terrington 1570 1 - 0
Chris J Terrington 1570 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1562 = (5448 + 400 * (3 - 1)) / 4)

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