Event: Rapidplay - Under 7000

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Opponent Rating Result
Mark Furnevall 1906 0 - 1
Mark Furnevall 1906 0 - 1
Jack Wills 1643 1 - 0
Jack Wills 1643 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1575 = (7098 + 400 * (1 - 3)) / 4)

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