Event: B&DCL Div 2

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Opponent	Rating	Result
Dennis Stokes-Carter	1758	1 - 0
Richard Smith	1915	0 - 1
Richard Smith	1915	½ - ½
Brian Curran	1780	1 - 0
Paolo Mostardi	1750	0 - 1
John Torrance	1735	1 - 0
Jamie Doyle	1672	0 - 1

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

1789 = (12525 + 400 * (3 - 3)) / 7)