Event: D&DCL Div 3

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Opponent	Rating	Result
Edward Brown	106	½ - ½
Herbert TT Loomes	106	0 - 1
Norman W Parkin	105	1 - 0

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

106 = (317 + 400 * (1 - 1)) / 3)