Baku, Sainz under investigation for yellow flag infringement in Q3

Williams’ best qualifying result of the season is hanging in the balance as the stewards have summoned Carlos Sainz to investigate a second potential infringement involving yellow flags.

The investigation follows an incident during Q3, where Sainz failed to sufficiently slow while passing through a yellow flag sector. The flags were deployed after Lando Norris went off track, though Norris’s car had already moved away from the scene by the time Sainz reached the sector.

A Repeat Offence

This investigation is particularly concerning as it marks Sainz's second encounter with the stewards regarding the same issue today. During final practice, the driver was already reprimanded for failing to respond correctly to yellow flags.

While Carlos Sainz commits to Williams for 2027 despite a challenging season, his current qualifying position could be heavily impacted by this latest scrutiny.

The Stewards' Previous Verdict

The stewards’ decision regarding the earlier practice infringement provides critical context for the current investigation. In that instance, the stewards noted that a single yellow was displayed in marshalling sector six only shortly before Sainz entered the area.

The official ruling detailed the following:

• Driver Input: Sainz claimed he only saw a light signal in his peripheral vision and was uncertain of its meaning, subsequently asking his team for clarification via radio.
• Telemetry and Onboard Data: Onboard footage confirmed a yellow warning light was flashing on the steering wheel. Despite this, Sainz admitted he had not been able to pay attention to the warning.
• Performance Impact: Data showed Sainz braked slightly earlier and accelerated more moderately at the exit of turn four, resulting in a loss of approximately 0.10 seconds in the sector.

Despite finding that Sainz failed to sufficiently reduce speed—noting that he accelerated up to the limiter while still within the yellow sector even after the green light became visible—the stewards opted for a driving reprimand rather than the standard five-place grid penalty. They cited the very short duration between the flag display and Sainz's entry into the sector as a significant mitigating factor.

With the Q3 incident now under review, the threat of a formal penalty looms over the Williams driver.