Event: Guildford Qualifier

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Opponent Rating Result
Jasper O'Conor 27 1 - 0
Percy Godfrey 0 1 - 0
Devon Connor 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

142 = (27 + 400 * (2 - 1)) / 3)

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