Event: Central London Qualifier

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Opponent	Rating	Result
Baran Tas	0	1 - 0
Nicolas Halley	1675	1 - 0
Edis Mehmed	0	1 - 0

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

958 = (1675 + 400 * (3 - 0)) / 3)