Event: County Championship

PDF Excel

Opponent	Rating	Result
Alex Squire	0	1 - 0
Jason Golding	0	1 - 0
Ian McDonald	0	0 - 1
Alan J Nelder	0	1 - 0
Jules Brown	0	0 - 1

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

80 = (0 + 400 * (3 - 2)) / 5)