Event: Cumnor Bill Laar Trophy

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Opponent	Rating	Result
Pedro Monteiro	1110	½ - ½
Allan Evans	0	0 - 1
Callum Brewerton	0	0 - 1
Dylan Bettson	0	0 - 1
Robin Carr	1541	0 - 1
Andrew Hudson	1450	0 - 1
Steven P Bennett	1514	1 - 0

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

574 = (5615 + 400 * (1 - 5)) / 7)