Event: Guildford Qualifier

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Opponent Rating Result
Sophia Fulford 0 1 - 0
Thomas Williams 0 1 - 0
Ronit Sachdeva 27 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

409 = (27 + 400 * (3 - 0)) / 3)

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