Event: Div1

PDF Excel

Opponent	Rating	Result
Derek A Jarvis	178	0 - 1
D Ashcroft	155	1 - 0
Andrew J Mort	158	1 - 0
Robert H Willoughby	137	1 - 0
Steven J Burke	172	1 - 0
Paul Williams	140	1 - 0
Maurice J Hill	147	1 - 0

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

441 = (1087 + 400 * (6 - 1)) / 7)