Event: Northamptonshire Silver King League Division 1

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Opponent	Rating	Result
Shayan Zarein Dolab	1699	0 - 1
Sajan Ganger	1631	½ - ½

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

1465 = (3330 + 400 * (0 - 1)) / 2)