Charles Leclerc set the early pace for Ferrari in first practice at the Russian Grand Prix.
As the Italian team go in search of a fourth successive win since the summer break, the Monegasque posted a 1m34.462s on the soft compound tyre, pipping Max Verstappen by less than a tenth.
Heading into this weekend, the question was whether the apparent progress Ferrari made in curing their handling issues in Singapore would be transferred to a faster, more flowing circuit like Sochi.
And the early signs are positive with Leclerc the fastest man in both Sector 1 and Sector 2 but their rivals are able to claim back some time in the technical final part of the lap.
Sebastian Vettel wasn’t quite as comfortable finishing half a second down in third.
Importantly, the German was only 0.2s clear of Valtteri Bottas in fourth, but both Mercedes drivers would set their best time on the medium compound tyre with the relative performance likely to be quite high on the smooth track surface.
Known as a specialist around the Sochi circuit, Bottas was two-tenths clear of teammate Lewis Hamilton in fifth as Alex Albon completed the top six in the second Red Bull.
In the midfield, Renault inserted themselves as the early leaders with Nico Hulkenberg seventh, six-tenths up on Daniel Ricciardo in eighth.
It was a less than ideal end to the session for the Australian though, as he lost the rear through Turn 10 and slid into the barriers doing plenty of damage to the rear wing.
Racing Point’s focus remained on evaluating their latest upgrade introduced last weekend in Singapore, with Sergio Perez showing solid performance in ninth.
Also at Haas, Romain Grosjean appeared happier in his Australia-spec car in 10th, as the American team completes their own development work with an eye on 2020.
McLaren has work to do as Carlos Sainz was only 11th and Lando Norris 16th in Practice 1, with the strong pace of rivals Renault no doubt also catching their attention.
Pierre Gasly sat 12th for Toro Rosso, but there was early frustration for local favourite Daniil Kvyat as a mechanical issue forced the Russian to stop out on track after just five laps.
Alfa Romeo enjoyed a strong weekend in Sochi last year, but early pace was slightly disappointing with Kimi Raikkonen 15th and Antonio Giovinazzi 17th.
The main midfield pack remains tight though with only a second covering Ricciardo on P8 to the Italian in 17th.
Williams continued to languish at the back of the field with George Russell 1.2 seconds off Giovinazzi in 18th, while Robert Kubica was bottom of the timings, suffering a spin along the way.
Full results from first practice can be seen below:
