Event: D&DCL Div 3

PDF Excel

Opponent	Rating	Result
Andy Bacon	100	0 - 1
Ric Dawson	82	0 - 1
Dudley Thorpe	75	1 - 0
John E Fryer	109	½ - ½

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

-9 = (366 + 400 * (1 - 2)) / 4)