Event: Division 1

PDF Excel

Opponent	Rating	Result
Neil Graham	150	½ - ½
Ewan Fewell	155	0 - 1
Graeme Jennings	173	½ - ½
Chris S Cantrill	159	0 - 1
Andrew P George	170	0 - 1

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

-79 = (807 + 400 * (0 - 3)) / 5)