Event: Wiseman-Hurley Open 2023

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Opponent	Rating	Result
Phil Ramsey	1837	0 - 1
John Gillett	1655	0 - 1
Ben Gannon	1450	1 - 0
Thomas Francis	1584	1 - 0(def)
Mark S Wadsworth	1718	0 - 1
Peter Mellor	1695	0 - 1
John Pickering	1404	0 - 1
Ben Wilson	1402	1 - 0

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

1423 = (11161 + 400 * (2 - 5)) / 7)