Event: Rapidplay 2022-23 all-play-all

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Opponent Rating Result
James Leare 1251 0 - 1
James Leare 1251 1 - 0
Peter Rankin 1515 0 - 1
Peter Rankin 1515 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1183 = (5532 + 400 * (1 - 3)) / 4)

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