Event: Hammersmith Rockhammer Cup (Online)

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Opponent	Rating	Result
Robin Sarfas	0	1 - 0
Christof Brixel	2057	0 - 1
Nadim Osseiran	1075	1 - 0
C Kenneth Kwabiah	1352	0 - 1
Christof Brixel	2057	1 - 0
Adam Cranston	1720	1 - 0
Chris J Moore	0	0 - 1

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

1237 = (8261 + 400 * (4 - 3)) / 7)