Ferrari driver Felipe Massa is in a "stable, satisfactory" condition following emergency surgery after he suffered skull damage and concussion in a high-speed crash during a qualifying round for the Hungarian Grand Prix.
He was airlifted to hospital in Budapest. Ferrari says the outcome was "positive" and that Massa will remain under observation in intensive care.
The Italian team will make a further statement on his condition on Sunday.
Massa, 28, hit a tyre wall after a spring that fell off Rubens Barrichello's car seconds earlier, flew up and hit his helmet.
Last week, Henry Surtees, 18, of Britain, was killed in an accident in a Formula Two race at Brands Hatch.
The son of former world champion John Surtees was struck by a wheel which flew off a competitor's car.
Sunday's race will now take place with only 19 drivers. Fernando Alonso of Spain topped qualifying and has the pole for Renault.
Red Bull team-mates Sebastian Vettel and Mark Webber will start second and third.