Event: Northamptonshire Silver King League Division 2

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Opponent	Rating	Result
Omar Oliveri	1629	0 - 1
Matthew Edwards	1409	0 - 1
Ioan Strugar	1591	0 - 1
Ron Cooper	1491	0 - 1
Ross Webster	1514	0 - 1
Dan Becker	1198	1 - 0
Ross Webster	0	0 - 1

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

976 = (8832 + 400 * (1 - 6)) / 7)