Event: Hillingdon Div 2

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Opponent Rating Result
Gregory Barseghyan 1679 0 - 1
Amit Midha 1744 1 - 0
Gagan Bablu 1986 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1670 = (5409 + 400 * (1 - 2)) / 3)

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