Event: Hillingdon Div X

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Opponent Rating Result
Roy Ho 1287 0 - 1
Dhairya Kataria 1272 0 - 1
Gautam Sriram 1312 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

890 = (3871 + 400 * (0 - 3)) / 3)

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Opponent Rating Result
Harriet Cann 629 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1029 = (629 + 400 * (1 - 0)) / 1)