Event: Darlington RAPIDPLAY

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Opponent	Rating	Result
Jonathan Sams	1743	0 - 1
Jonathan Sams	1743	½ - ½
Liam Bellwood	1679	0 - 1
Liam Bellwood	1679	0 - 1
Richard Kuby	1353	0 - 1
Peter McKay	1638	1 - 0
Peter McKay	1638	0 - 1
James Garner	1593	0 - 1
James Garner	1593	0 - 1
Sam Ball	1438	1 - 0
Sam Ball	1438	1 - 0
Robert Donner	1630	0 - 1
Robert Donner	1630	½ - ½

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

1446 = (20795 + 400 * (3 - 8)) / 13)