Event: Northamptonshire Silver King League Division 1

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Opponent	Rating	Result
Martin Crichton	1957	0 - 1
Daniel Storey	2040	0 - 1
Stratsimir K Kostov	2276	0 - 1
Mark BW Waterfield	1922	0 - 1
Daniel Storey	2244	0 - 1
Rajan Ganger	2078	1 - 0

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

1820 = (12517 + 400 * (1 - 5)) / 6)