Event: Rapidplay

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Opponent Rating Result
Mark Gowers 1893 0 - 1
Ian Goodyer 1634 0 - 1
Ian Goodyer 1634 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1320 = (5161 + 400 * (0 - 3)) / 3)

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