Event: Knockout 2023

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Opponent	Rating	Result
Geoff Parish	1164	1 - 0
John E Davis	1475	1 - 0
Keith DF Gregory	1964	0 - 1

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

1668 = (4603 + 400 * (2 - 1)) / 3)