Event: Rapidplay 2022-23 all-play-all

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Opponent Rating Result
Robert McDonald 1826 1 - 0
Robert McDonald 1826 0 - 1
Chris W Heath 1783 0 - 1
Chris W Heath 1783 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1805 = (7218 + 400 * (2 - 2)) / 4)

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