Event: Silver Rook

PDF Excel

Opponent	Rating	Result
E Gordon Marks	142	0 - 1
Martin S Simmonds	151	0 - 1
Alan Riddle	83	1 - 0

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

-8 = (376 + 400 * (1 - 2)) / 3)