Event: Div3

PDF Excel

Opponent	Rating	Result
Norman W Parkin	94	0 - 1
J Martin Gibson	62	1 - 0
Michael D Boreham	116	0 - 1

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

-43 = (272 + 400 * (1 - 2)) / 3)