Event: Hammersmith Rockhammer Cup

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Opponent	Rating	Result
Andrew Macleod	1705	0 - 1
Nick Groves-Kirkby	1607	1 - 0
Evariste Moquet	1770	0 - 1
Antoine Tiers	1375	0 - 1
Antoine Tiers	1375	½ - ½
John Davison	0	1 - 0
Tom Townsend	2071	0 - 1

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

1300 = (9903 + 400 * (2 - 4)) / 7)