Event: South London Qualifier

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Opponent	Rating	Result
Sahil Kohli	1640	0 - 1
Vinay Keshav	1281	0 - 1
Marton Gyorgy	0	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

840 = (2921 + 400 * (1 - 2)) / 3)