Event: D&DCL Div 2

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Opponent	Rating	Result
Richard P Temple	1572	½ - ½
Andre Cockburn	1582	½ - ½
John S Shaw	1753	½ - ½
Norman J Davies	1625	½ - ½
Owen Dale	1641	½ - ½
Jon Jenson	1465	½ - ½
Matthew Caswell	1640	½ - ½

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

1611 = (11278 + 400 * (0 - 0)) / 7)