Event: Division 3

PDF Excel

Opponent	Rating	Result
Simon Gathern	1680	0 - 1
Frank Jewell	1490	0 - 1
Eamonn G Howard	1321	1 - 0
George Barrell	0	0 - 1
Jim Waters	0	0 - 1

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

658 = (4491 + 400 * (1 - 4)) / 5)