São Paulo Grand Prix · Analysis
Jack Doohan’s Haas chance: F1’s four-driver rule explained
Haas reportedly considered Jack Doohan after Esteban Ocon’s exit. Here is how F1’s four-driver limit shaped its decision to promote Rafael Câmara.
Jack Doohan’s reported chance of replacing Esteban Ocon at Haas came with a regulatory complication: using the Australian would have left the team unable to give Rafael Câmara a race debut later in 2026 under Formula 1’s normal four-driver limit.
RACER reports that Haas considered Doohan before selecting Câmara for the São Paulo Grand Prix. That consideration has not been publicly confirmed by the team.
The distinction matters. The regulation did not make Doohan ineligible. Haas could have chosen him, but doing so would have used its final available place for a different race driver this season.
How F1’s four-driver limit works
Article B1.7.1 of the FIA’s 2026 Sporting Regulations permits each team to use a maximum of four drivers in races during a championship. It is a season-wide limit across both cars, rather than four drivers per seat.
Haas has already raced Ollie Bearman, Ocon and Ryo Hirakawa. Hirakawa’s Mexico appearance therefore left one unused place. Once Câmara races, he becomes the fourth driver; Haas can subsequently select from those four without adding a new name.
Had Doohan taken that fourth place instead, Câmara would have been a fifth driver. The rules provide for additional changes for reasons of force majeure to be considered separately, but that is an exceptional provision, not an automatic extra slot for a preferred line-up.
Practice appearances are treated separately. Giving another driver FP1 or FP2 running does not, by itself, use one of those four race-driver places.
Why Câmara made sense for Haas
Haas has ended Ocon’s 2026 race duties and named Câmara for São Paulo. Hirakawa is unavailable for Brazil because of his Toyota World Endurance Championship commitments, according to RACER.
Câmara is already signed to race for Haas in 2027. Bringing his debut forward gives the team an opportunity to begin that working relationship in competition before his full-season programme starts.
From that perspective, the rule made the choice consequential beyond a single weekend: using Doohan would have sacrificed the option of racing Câmara this year under the ordinary limit. That explains the constraint, although Haas has not publicly identified it as the decisive reason for its selection.
What this means for Doohan
The missed opportunity does not establish that Haas has rejected Doohan’s wider contribution. In October, Komatsu discussed a possible continuing relationship with Doohan beyond 2026, while making clear that no agreement had been reached.
For now, Câmara’s confirmed assignment is São Paulo. RACER reports that the subsequent line-up remains undecided. A choice between Câmara and Hirakawa would stay within the four-driver limit; introducing Doohan after Câmara races would require exceptional consideration.