Event: Div4

PDF Excel

Opponent	Rating	Result
Alex Abdullahi	0	1 - 0
Harry Madden	101	0 - 1
Matthew Caswell	105	½ - ½
Matthew Caswell	105	0 - 1
Ian R Morrell	59	1 - 0

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

74 = (370 + 400 * (2 - 2)) / 5)