Event: Div1

PDF Excel

Opponent	Rating	Result
Derek A Jarvis	171	0 - 1
Andrew J Mort	157	1 - 0
David Hulme	151	1 - 0
Andrew J Mort	160	½ - ½
Peter M Collins	160	½ - ½

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

240 = (799 + 400 * (2 - 1)) / 5)