Event: D&DCL Div 1

PDF Excel

Opponent	Rating	Result
D Martin Howard	177	0 - 1
David Williams	162	½ - ½
Ian S Kingston	174	0 - 1
Martin Pettinger	0	1 - 0
David Williams	162	0 - 1
Andrew Stevens	0	½ - ½
Steven J Burke	166	½ - ½
Sohrab Panday	161	½ - ½

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

25 = (1002 + 400 * (1 - 3)) / 8)