Event: Northamptonshire Silver King League Division 2

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Opponent Rating Result
Benjamin Hodgkiss 1548 0 - 1
Ioan Strugar 1643 0 - 1
Joshua Stojkovic 1401 1 - 0
Joshua Stojkovic 1419 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1503 = (6011 + 400 * (2 - 2)) / 4)

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