Event: Cumnor Bill Laar Trophy

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Opponent	Rating	Result
Steven Jackson	0	0 - 1
Dylan Bettson	0	1 - 0
Callum Brewerton	0	0 - 1
Allan Evans	0	1 - 0
Pedro Monteiro	1110	0 - 1
Robin Carr	1541	0 - 1
Steven P Bennett	1514	0 - 1

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

424 = (4165 + 400 * (2 - 5)) / 7)