Event: Hull Champs Swiss

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Opponent	Rating	Result
Antony Holgate	1407	1 - 0
Robert Docwra	1685	1 - 0
Andrei Ciuravin	2178	0 - 1
David Stothard	1748	1 - 0
John W Atkinson	2005	1 - 0
Kristian C Usifoh	2050	1 - 0
Keith Thompson	1877	1 - 0
Xiaofan Li	1791	0 - 1

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

2043 = (14741 + 400 * (6 - 2)) / 8)