Event: Hammersmith Sledgehammer Cup

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Opponent	Rating	Result
Zain Patel	99	1 - 0
Nadhmi Auchi	163	0 - 1
Christof Brixel	165	0 - 1

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

9 = (427 + 400 * (1 - 2)) / 3)