Event: Winter Club Div 2

PDF Excel

Opponent	Rating	Result
James Marshall	1473	0 - 1
George Bulbeck	0	0 - 1
Kobus Nienaber	1435	0 - 1
Nigel Gardner	1383	0 - 1
Lee T Tilton	1443	0 - 1
George P Jelliss	1315	1 - 0
Steve Ballantyne	1368	1 - 0

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

1031 = (8417 + 400 * (2 - 5)) / 7)