Event: Derby & District Cup QP

PDF Excel

Opponent	Rating	Result
Tomasz D Adamski	0	1 - 0
David Smith	0	0 - 1
Yuriy Slobodyuk	0	0 - 1
Stephen G Wootton	0	½ - ½

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

-100 = (0 + 400 * (1 - 2)) / 4)