Event: League

PDF Excel

Opponent	Rating	Result
Robert Hoggarth	0	0 - 1
Danny McMenamin	0	0 - 1
Harry Donegan	0	0 - 1
Peter Thompson	0	0 - 1
Tim Lounds	0	½ - ½

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

-320 = (0 + 400 * (0 - 4)) / 5)