Event: Macclesfield Pomeroy Cup

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Opponent	Rating	Result
Mick J Renshaw	109	0 - 1
AR Tony Lane	117	0 - 1
John Astley	113	0 - 1
Jake Darlington	0	0 - 1

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

-315 = (339 + 400 * (0 - 4)) / 4)