Event: All Play All

PDF Excel

Opponent	Rating	Result
Thomas Overthrow	1565	0 - 1
John Hems	1171	1 - 0
Peter W Leask	1179	1 - 0
Nicolas Bacon	1883	0 - 1
Robin J Cubbon	1096	1 - 0
John Hems	1171	1 - 0
Michael Williams	1399	1 - 0

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

1523 = (9464 + 400 * (5 - 2)) / 7)