Event: Preston Club Championship

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Opponent	Rating	Result
Malcolm R Peacock	184	½ - ½
Andrew R De Santos	99	1 - 0
D Brett Lund	207	0 - 1
David Tuke	135	1 - 0
Phillip J Taylor	149

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

256 = (625 + 400 * (2 - 1)) / 4)