Event: Division One

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Opponent	Rating	Result
Malcolm A Hunt	180	½ - ½
Alan D Lloyd	191	0 - 1
Phil Bull	167	1 - 0
Jonathan E Swindells	211	0 - 1
David M Cooper	172	½ - ½
Anthony J Green	168	½ - ½
Golam S Ali	169	½ - ½
Alan K Crombleholme	171	½ - ½
Keith R Ingram	175	1 - 0
Marcus Walsh	172	½ - ½

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

178 = (1776 + 400 * (2 - 2)) / 10)