Williams Formula One driver Alex Albon. AFP.
"Williams Racing can confirm that, after feeling unwell this morning and seeking medical advice from the FIA and local hospital, Alex Albon is now undergoing treatment for appendicitis," the team said in a statement.
"Alex is in good spirits and the team wishes him a speedy recovery."
Williams added that Formula 2 and Formula E champion Nyck De Vries will stand in for 26-year-old Albon, taking part in Saturday's practice session and qualifying before making his F1 debut alongside Nicholas Latifi on Sunday.
Albon, who placed 11th and 10th in Friday's two practice sessions, has scored four points in the drivers' championship this season.
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