Event: B&DCL Div 3

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Opponent	Rating	Result
Michael Williams	147	0 - 1
Simon Fox	136	0 - 1
Peter Donaldson	134	0 - 1
Alan J Tyler	135	0 - 1
Robert Davenport	132	½ - ½
Neil Salinger	138	½ - ½
Adam Jaggard	122	½ - ½
Richard W Ursell	142	½ - ½
David Bryant	134	0 - 1

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

-87 = (1220 + 400 * (0 - 5)) / 9)