Event: Division 1 - Davy Trophy

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Opponent	Rating	Result
Mike Alcock	170	0 - 1
Geoff Frost	167	½ - ½
James RG Marley	166	0 - 1
Gerald D Fletcher	148	½ - ½
Andrew J Mort	169	0 - 1
Alan K Sutton	136	0 - 1
Anthony Perry	115	½ - ½

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

-76 = (1071 + 400 * (0 - 4)) / 7)