Event: Division Two

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Opponent	Rating	Result
Julie C Wilson	137	½ - ½
John Freeman	140	0 - 1
Raymond Carpenter	157	0 - 1
Mike A Biddle	135	½ - ½
Andy Ambrose	137	0 - 1
Rob Bricknell	129	½ - ½
Nicholas Dimitrov	109	1 - 0
Jonathan P Pincher	141	1 - 0

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

86 = (1085 + 400 * (2 - 3)) / 8)