Event: Open

PDF Excel

Opponent	Rating	Result
Jonathan E Swindells	211	0 - 1
Martin D Smyth	174	1 - 0
Nicholas A Walker	181	0 - 1
Golam S Ali	164	1 - 0
Jonathan E Swindells	211	0 - 1
Martin D Smyth	174	0 - 1
Nicholas A Walker	181	0 - 1
Neil J Owen	184	0 - 1

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

-15 = (1480 + 400 * (2 - 6)) / 8)