Event: A Division

PDF Excel

Opponent	Rating	Result
Dave S Almond	138	1 - 0
Kyle Pelling	121	1 - 0
Martyn Hamer	189	0 - 1
Kyle Pelling	121	1 - 0

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

342 = (569 + 400 * (3 - 1)) / 4)