Event: Rainham Championship Div 1

PDF Excel

Opponent	Rating	Result
Keith Nevols	1772	0 - 1
Andrew C Waters	1909	1 - 0
Chris D Brown	1441	0 - 1
Tobias W Stock	1986	0 - 1

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

1577 = (7108 + 400 * (1 - 3)) / 4)