Event: Div 4 - Athenaeum Cup

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Opponent	Rating	Result
Anthony Perry	1605	½ - ½
Rishab Cammanchery Krishnan	1651	½ - ½
Les P Day	1612	1 - 0
Peter T Sharpe	1666	0 - 1
George D Boothman	1642	½ - ½
Josh Stubbs	1505	½ - ½
Byron Walker-Mills	0	1 - 0
Jonathan Ferguson	1626	½ - ½
Oliver West	1543	1 - 0

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

1517 = (12850 + 400 * (3 - 1)) / 9)