Event: Rugeley Championships 2023 Pool A

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Opponent	Rating	Result
Robert Fell	1702	½ - ½
Luke Sullivan	1690	½ - ½
James Perks	1250	1 - 0
Robert Fell	1705	0 - 1
Nicoli Tisma-Walker	1860	0 - 1
Steven P Heath	1535	0 - 1
Luke Sullivan	1665	0 - 1
James Perks	1231	½ - ½

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

1430 = (12638 + 400 * (1 - 4)) / 8)