Event: Hillingdon Div 3

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Opponent Rating Result
Raj Parmar 1422 1 - 0
Shreya Sawant 566 ½ - ½
Edward Poynton 1501 ½ - ½
Patrick P Sartain 1492 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1345 = (4981 + 400 * (1 - 0)) / 4)

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