Event: Hillingdon Div 2

Opponent Rating Result
Mary Helen Deans 1644 0 - 1
Mark Connor 1494 1 - 0
Jerry Scott 1426 1 - 0
Phil S Humphry 1540 1 - 0
George Masefield 0 0 - 1
Ian K Cross 1716 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1303 = (7820 + 400 * (3 - 3)) / 6)

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