Event: B&DCL Div 2

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Opponent	Rating	Result
Peter A Manning	1777	1 - 0
Dennis Stokes-Carter	1856	1 - 0
Jason Wang	1550	0 - 1
John E Harris	1578	1 - 0
Stephen M Pollyn	1766	1 - 0
Paul A Jackson	1718	1 - 0
Paul A Jackson	1718	½ - ½
Stephen Bolton	1726	½ - ½

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

1911 = (13689 + 400 * (5 - 1)) / 8)