Event: Hillingdon Div 3

Opponent Rating Result
Adah Simon Ogah 1404 0 - 1
Gabriele Martellotta 1418 0 - 1
Ricky Sidhu 1257 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

960 = (4079 + 400 * (0 - 3)) / 3)

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