Event: Club Championship

PDF Excel

Opponent	Rating	Result
David Callaghan	0	0 - 1
David Halpin	0	1 - 0
Peter Gregory	0	0 - 1
Eli Maunder	0	0 - 1
Mike Berry	0	0 - 1

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

-240 = (0 + 400 * (1 - 4)) / 5)