Event: Div3

PDF Excel

Opponent	Rating	Result
David JF Woodhouse	124	0 - 1
Frank K Pearson	105	0 - 1
Shaun Walsh	94	1 - 0
Roger W Walker	113	½ - ½
Brian Lever	117	0 - 1
J Martin Gibson	71	1 - 0
Ric Dawson	0	1 - 0

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

89 = (624 + 400 * (3 - 3)) / 7)