Event: Div 4 - Athenaeum Cup

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Opponent	Rating	Result
Byron Walker-Mills	0	1 - 0
John N Stevens	1571	0 - 1
Peter T Sharpe	1666	0 - 1
Will Winlow	1610	1 - 0
Oliver West	1543	0 - 1
Oliver West	1543	1 - 0
Brian Crofts	1591	1 - 0
Mattiangelo D'Agnese	1582	½ - ½

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

1438 = (11106 + 400 * (4 - 3)) / 8)