Event: Hull CC Championship 2022-23

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Opponent	Rating	Result
Shaun J Culkin	1992	1 - 0
John W Atkinson	1971	½ - ½
Maksym Larchikov	1756	½ - ½
Mark I Collinson	1965	0 - 1
Joe Varley	2026	0 - 1
Keith Thompson	1916	0 - 0
Andrei Ciuravin	2181	½ - ½

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

1915 = (11891 + 400 * (1 - 2)) / 6)