Event: D&DCL Div 1

PDF Excel

Opponent	Rating	Result
Mike Alcock	175	0 - 1
Alan F Downham	162	½ - ½
Alex Webster	163	1 - 0
Derek A Jarvis	173	½ - ½

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

168 = (673 + 400 * (1 - 1)) / 4)