Event: Open

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Opponent	Rating	Result
Patrick CM Duncan	184	0 - 1
Donald J Mason	195	½ - ½
John Pitcher	205	0 - 1
David Thomson	167	0 - 1
Shahab U Quraishi	165	1 - 0
Patrick CM Duncan	184	0 - 1
Donald J Mason	195	0 - 1
John Pitcher	205	0 - 1
David Thomson	167	1 - 0
Shahab U Quraishi	165	0 - 1
Golam S Ali	164	0 - 1

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

-37 = (1996 + 400 * (2 - 8)) / 11)