Event: Division 2 East

PDF Excel

Opponent	Rating	Result
Paul Humphreys	135	1 - 0
Andrew M Gregory	167	0 - 1
Chris S Purry	161	½ - ½
A Clive Walley	160	0 - 1

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

56 = (623 + 400 * (1 - 2)) / 4)