Event: IM Brown

PDF Excel

Opponent	Rating	Result
Peter Catt	140	0 - 1
Richard S Boylan	142	0 - 1
Lackson Mzizi	0	½ - ½
Steven Potter	159	0 - 1

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

-190 = (441 + 400 * (0 - 3)) / 4)