Williams Formula 1 rookie Franco Colapinto is uncertain for Saturday's Las Vegas Grand Prix after crashing heavily in qualifying.
The 21-year-old Williams driver was taken to the medical centre after he hit the wall during the second phase of Friday night's session in Las Vegas, the impact wrecking Colapinto's car and scattering debris across the track.
Williams reported in a statement: "During Qualifying Franco sustained a significant impact of over 50G, requiring a medical check-up. An impact of this magnitude is obviously significant and severe.
"He will need to be evaluated again tomorrow before we will know whether he is clear to race. Franco’s health is all that matters and we are glad he is otherwise okay. We will provide further updates when we can."
The crash was Colapinto's third in two GP weekends and second in a row in qualifying. Making it over a dozen big and expensive shunts suffered by Williams drivers this season, Alex Albon and Logan Sargeant included.
Vowles: It's big numbers when you calculate where we are at the moment
The Argentine replaced dropped American Sargeant at Williams from the Italian Grand Prix in September, making a strong impression with points in Azerbaijan and Austin. Las Vegas would be the seventh Grand Prix start of his career.
Team boss James Vowles told ESPN on Thursday that the repair bill for five accidents in the last two races, with Alex Albon ruled out of the Brazilian Grand Prix after a crash in qualifying, stretched into the millions of dollars: "Less than ten but more than three.
"It's big numbers when you calculate where we are at the moment. The sustained damage we had across Mexico and Brazil, I hadn't experienced anything like that in 25 years of working in the sport," admitted the Williams team boss.
Vowles said those accidents "took out five front wings, five floors, five rear wings, three gearboxes, two engines, two chassis. An amount that you just can't believe."
Former F1 champions Williams are P9 in the 10-team standings.
(Writing by Alan Baldwin; Additional Quotes by Agnes Carlier)