Event: Div3

PDF Excel

Opponent	Rating	Result
Roger W Walker	115	½ - ½
Colin Ross	117	1 - 0
Nigel Wright	133	0 - 1
Matthew Bubis	137	0 - 1

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

26 = (502 + 400 * (1 - 2)) / 4)