Lewis Hamilton and George Russell sparked concerns in the Mercedes garage as they both reported the same car issue in practice in Baku.
The first Sprint weekend of the season means less practice time than usual for the engineers to gather the data they like to get ahead of a race. And a fresh change to the format means the Friday morning session is now the only hour of practice they will have for the Azerbaijan Grand Prix.
It is more imperative than ever, then, that FP1 is incident-free and does not present any problems for the teams. Sadly for Mercedes, their luck was out as, within minutes of the start of practice, Hamilton was on the radio with a concern.