Event: Derby & District Plate QP

PDF Excel

Opponent	Rating	Result
David W Fone	0	0 - 1
Stuart Marshall	0	0 - 1
Oliver Cureton	0	1 - 0
Kenelm Acons	0	1 - 0

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

0 = (0 + 400 * (2 - 2)) / 4)