Event: WMA Spring League Division 2

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Opponent	Rating	Result
Peter Seeley	0	1 - 0
David J Ireland	0	1 - 0
Nigel Byrne	0	1 - 0
Daniel C Robinson	0	½ - ½
Arnold G Kirkland	70	1 - 0
Christopher J Evans	70	1 - 0
Carl Sheeran	70	1 - 0
J Wojciech Czopek	0	1 - 0
Peter Seeley	0	1 - 0
David J Ireland	0	0 - 1
Nigel Byrne	0	1 - 0
Daniel C Robinson	0	½ - ½
Arnold G Kirkland	70	1 - 0
Christopher J Evans	70	½ - ½
Carl Sheeran	70	1 - 0
J Wojciech Czopek	0	1 - 0

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

301 = (420 + 400 * (12 - 1)) / 16)