Event: Wiseman Hurley Open 2022

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Opponent	Rating	Result
Ron Harrison	1820	0 - 1
Peter Mellor	1637	0 - 1
John Pickering	0	0 - 1
Phil Ramsey	1753	0 - 1
Ben Gannon	1426	0 - 1
Jordan Dickens	0	½ - ½
Alistair Bond	1666	0 - 1

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

843 = (8302 + 400 * (0 - 6)) / 7)