Event: IM Brown

PDF Excel

Opponent	Rating	Result
David Harasym	0	1 - 0
Peter Shaw	0	0 - 1
Rangarirai Ernest Karumazondo	0	0 - 1

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

-133 = (0 + 400 * (1 - 2)) / 3)