Event: Hillingdon Div 3

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Opponent Rating Result
Ivan Hauptman 0 1 - 0
Dhairye Gauri 1490 1 - 0
Surjit S Dhemrait 1619 ½ - ½
Ron Foale 1631 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1385 = (4740 + 400 * (2 - 0)) / 4)

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