Event: Mick Croft Cup

PDF Excel

Opponent	Rating	Result
Jon Hunt	1597	1 - 0
Paul Verrall	1435	1 - 0
Lee Butcher	1640	0 - 1

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

1691 = (4672 + 400 * (2 - 1)) / 3)