Sebastian Vettel is possibly in store for a grid penalty after a red flag infringement in Texas.
The German has been accused of failing to slow sufficiently during a red flag period in free practice one today.
The red flag was brought out when Charles Leclerc span his car and rejoined via the gravel, bringing stones onto the circuit.
Drivers are required to reduce their speed sufficiently from the time the red flag message appears until they cross the first safety car line when entering the pitlane.
Lap times may be deleted, but as with Esteban Ocon in Suzuka, a three place grid penalty can be applied.
This could spell further disaster for the driver who at this point is looking for a miracle to pull back the championship gap to his rival, Lewis Hamilton.