Event: Doncaster Bell Trophy

PDF Excel

Opponent	Rating	Result
Phillip J Battye	131	0 - 1
Ian Farrow	108	1 - 0
Phillip J Battye	131	0 - 1
Ian Farrow	108	0 - 1

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

-81 = (478 + 400 * (1 - 3)) / 4)