Event: Championship 2018

PDF Excel

Opponent	Rating	Result
Neil Griffiths	123	0 - 1
Marcin Skopinski	129	1 - 0
Keith J Riach	137	0 - 1
Peter J Clark	111	0 - 1
Andrew Parker	55	1 - 0

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

31 = (555 + 400 * (2 - 3)) / 5)