Event: B&DCL Div 3

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Opponent	Rating	Result
WG Belcher	1800	0 - 1
Tim Joyce	1689	1 - 0
Andrew Manson	1683	½ - ½
Zander Booth	1727	½ - ½
Paul A Jackson	1698	0 - 1
Thorsten Meyer	1738	0 - 1
Malcolm Day	1640	½ - ½
Susan Kageler	1635	½ - ½

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1601 = (13610 + 400 * (1 - 3)) / 8)