Event: Division 3 - Batley-Meek Memorial Trophy

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Opponent	Rating	Result
Chris G Willey	140	0 - 1
Kevin Keenan	83	0 - 1
Kevin R Marshall	130	½ - ½
Steve Withington	127	½ - ½
Kevin Keenan	125	0 - 1
A David Fidler	109	1 - 0
Saeed Hassani	133	0 - 1

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

-50 = (847 + 400 * (1 - 4)) / 7)