Event: Division 4

PDF Excel

Opponent	Rating	Result
Mike Herbert	130	0 - 1
Aidan Elston	69	1 - 0
Jonathan Moore	96	1 - 0
Robert H Willoughby	125	0 - 1
Keith W Roper	137	0 - 1
Philip Erentz	90	1 - 0
Jim Wellington	109	½ - ½

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

108 = (756 + 400 * (3 - 3)) / 7)