Event: Division Four

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Opponent	Rating	Result
Ron Evans	120	½ - ½
Allan Kendall	87	½ - ½
Richard Bailey	107	½ - ½
Peter S Banks	107	½ - ½
Malcolm J Phipps	113	½ - ½
Paul Silverman	107	0 - 1
Simon A Jones	106	0 - 1

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

-8 = (747 + 400 * (0 - 2)) / 7)