Event: Division 1

PDF Excel

Opponent	Rating	Result
Alex Robinson	1616	0 - 1
Brian Davies	1289	1 - 0
Graham Peters	1238	0 - 1
Gary Cresswell	1345	0 - 1
Lee P Kay	1960	0 - 1

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

1250 = (7448 + 400 * (1 - 4)) / 5)