Event: Division 1

PDF Excel

Opponent	Rating	Result
Chris F Barratt	121	½ - ½
Chris Fewtrell	146	1 - 0
Paul Groves	0	1 - 0

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

356 = (267 + 400 * (2 - 0)) / 3)