Event: IM Brown

PDF Excel

Opponent	Rating	Result
Andy Ross	0	0 - 1
Robert A Dean	0	0 - 1
Norman G Andrews	0	1 - 0
Peter Gregory	0	1 - 0
Chris R Tinker	0	0 - 1

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

-80 = (0 + 400 * (2 - 3)) / 5)