Event: Wiseman-Hurley Open 2023

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Opponent	Rating	Result
Steven Philp	1562	0 - 1
Alfie Melia	1898	0 - 1
John Pickering	1421	1 - 0
A Forman	0	1 - 0(def)
John Gillett	1655	1 - 0
Peter Jenner	1647	½ - ½
Luke S Boumphrey	1981	0 - 1
Chris Kaye	1629	0 - 1

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

1570 = (11793 + 400 * (2 - 4)) / 7)