Event: D&DCL Div 1

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Opponent	Rating	Result
Simon N Gilmore	189	½ - ½
Kenneth GE Morrison	174	½ - ½
Peter JE Ackley	191	½ - ½
Ray J Forey	169	½ - ½
Anthony J Green	169	½ - ½
David Hulme	153	1 - 0
Kenneth GE Morrison	174	½ - ½
Andrew Stevens	154	½ - ½

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

222 = (1373 + 400 * (1 - 0)) / 8)