Event: Hull Champs Swiss

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Opponent	Rating	Result
Andrei Ciuravin	2178	0 - 1
Jason Clemmey	1373	1 - 0
John G Cooper	2193	0 - 1
Stuart Sharp	1200	0 - 1
Christopher J Harris	1481	0 - 1
Andrew Donegan	1411	1 - 0(def)
Andrew Donegan	1411	1 - 0

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

1506 = (9836 + 400 * (2 - 4)) / 6)