Event: Hillingdon Div 2

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Opponent Rating Result
John Clenshaw 1734 1 - 0
Bodhana Sivanandan 1981 0 - 1
Shion Fernandes 1514 ½ - ½
Ron Foale 1631 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1615 = (6860 + 400 * (1 - 2)) / 4)

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