Event: South London Qualifier

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Opponent Rating Result
Joshua Doyle 1609 0 - 1
Grace Isaacs 0 0 - 1
Jingye Sun 0 0 - 1
Aarav Garg 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2 = (1609 + 400 * (0 - 4)) / 4)

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