Event: Division 3 West

PDF Excel

Opponent	Rating	Result
David JW Smith	0	0 - 1
Kerry Kyriacou	0	0 - 1
David Graham	0	0 - 1
Simon W Gray	0	0 - 1

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

-400 = (0 + 400 * (0 - 4)) / 4)