Event: Derby & District Plate QP

PDF Excel

Opponent	Rating	Result
Kenelm Acons	0	0 - 1
Jonathon Swift	0	0 - 1
Neil Cameron	0	0 - 1
George Moorcroft	0	0 - 1

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

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