Event: Calderdale 30 2024-25

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Opponent Rating Result
James Norton 1431 0 - 1
Steve Harrington 1577 0 - 1
Mark Ormerod 1709 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1439 = (4717 + 400 * (1 - 2)) / 3)

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