Event: DCL Div 1

PDF Excel

Opponent	Rating	Result
John P Weatherlake	175	0 - 1
Michael FG Duggan	192	½ - ½
Frank J Pittman	163	1 - 0
Andrew F Footner	180	½ - ½
Ronnie Burton	154	½ - ½
Mark A Potter	164	½ - ½
Graham J Willetts	165	1 - 0

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

228 = (1193 + 400 * (2 - 1)) / 7)