Event: Division 2

PDF Excel

Opponent	Rating	Result
Barry Jones	160	0 - 1
David I Hulme	141	1 - 0
Anthony RW Brough	140	1 - 0
Chris Baxter	127	1 - 0
Richard P Cantliff	121	½ - ½
George J Scattergood	138	1 - 0
David I Hulme	141	½ - ½

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

310 = (968 + 400 * (4 - 1)) / 7)