Event: County Championship

PDF Excel

Opponent	Rating	Result
Daniel J Wells	1989	0 - 1
Herman FF Kok	0	0 - 1
Paul A Hutchinson	2083	0 - 1
Francis J Bowers	1855	0 - 1

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

1082 = (5927 + 400 * (0 - 4)) / 4)