Event: Derby & District Plate QP

PDF Excel

Opponent	Rating	Result
Robert Frost	0	0 - 1
Michael Oakley	0	0 - 1
Parshva Jain	0	0 - 1
Dean Davis	0	0 - 1

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

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