Event: Darlington RAPIDPLAY

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Opponent	Rating	Result
Liam Bellwood	1679	½ - ½
Carl Stephens	1570	1 - 0
Carl Stephens	1570	½ - ½
Richard Kuby	1353	1 - 0
Richard Kuby	1353	1 - 0
Robert Donner	1630	0 - 1
Robert Donner	1630	½ - ½

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

1655 = (10785 + 400 * (3 - 1)) / 7)