Event: WMA Spring League Division 2

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Opponent	Rating	Result
Christopher J Evans	70	1 - 0
John P Wrench	1953	0 - 1
David J Ireland	0	1 - 0
Nicholas Fallowfield	0	½ - ½
J Wojciech Czopek	0	1 - 0
Christopher J Evans	70	1 - 0
John P Wrench	1953	0 - 1
Nicholas Fallowfield	0	½ - ½
J Wojciech Czopek	0	1 - 0

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

583 = (4046 + 400 * (5 - 2)) / 9)