Event: Derby & District Cup QP

PDF Excel

Opponent	Rating	Result
Martin Pettinger	0	0 - 1
David J Pickering	0	½ - ½
Andrew Toothill	0	0 - 1
D Martin Howard	0	0 - 1

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

-300 = (0 + 400 * (0 - 3)) / 4)