Event: Div1

PDF Excel

Opponent	Rating	Result
David Williams	159	0 - 1
Edward T Bromilow	157	0 - 1
Alan F Downham	162	0 - 1
Ross Murphy	149	0 - 1
D Martin Howard	175	½ - ½
D Philip Morgan	147	½ - ½
Neil Graham	148	1 - 0
Paul Williams	140	1 - 0

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

55 = (1237 + 400 * (2 - 4)) / 8)