Event: Northamptonshire Silver King League Division 1

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Opponent Rating Result
Stellio Jerome 1634 1 - 0
Ethan Rowe 1745 ½ - ½
Jonathan Cleghorn 1731 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1970 = (5110 + 400 * (2 - 0)) / 3)

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