Event: Hillingdon Div 1

Opponent Rating Result
Arthur Cann 1648 0 - 1
David J White 1773 1 - 0
JJ Padam 1751 1 - 0
Arran Jabbari 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1493 = (5172 + 400 * (3 - 1)) / 4)

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