Event: Lytham Club Championship

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Opponent	Rating	Result
Dennis Davies	103	1 - 0
Graham Taylor	110	½ - ½
Darren Pickering	0	½ - ½
John G Cooper	170	0 - 1
Colin Wilks	113	1 - 0

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

179 = (496 + 400 * (2 - 1)) / 5)