Event: Northamptonshire Silver King League Division 2

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Opponent	Rating	Result
Paul Young	1652	0 - 1
Rene Butler	1449	½ - ½
John Edmundson	1242	1 - 0

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

1448 = (4343 + 400 * (1 - 1)) / 3)