Event: Northamptonshire Silver King League Division 1

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Opponent	Rating	Result
Paul Young	1656	1 - 0
Stellio Jerome	1579	½ - ½
Dave Archer	1714	0 - 1
Wojciech Augustyniak	1364	1 - 0
John Edmundson	1238	1 - 0
John Edmundson	1245	1 - 0
Arrow Morris	1620	0 - 1
Arrow Morris	1635	1 - 0

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

1656 = (12051 + 400 * (5 - 2)) / 8)