Event: Div 2

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Opponent	Rating	Result
Andrew Robins	144	0 - 1
Colin Ross	117	½ - ½
Vaughan WG Smith	125	0 - 1
John D Hoddy	135	½ - ½
Mike Allen	116	½ - ½
Stephen Lamont	141	0 - 1
Andre Cockburn	115	½ - ½
Mike P Maher	140	½ - ½

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

-21 = (1033 + 400 * (0 - 3)) / 8)