Event: Guildford

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Opponent Rating Result
Alexander Jim John 1043 1 - 0
Alex Qu 0 1 - 0
Murad Abdelkhalek 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

748 = (1043 + 400 * (3 - 0)) / 3)

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