Carlos Sainz led Ferrari teammate Charles Leclerc in the second practice session at the Singapore Grand Prix, but the results were inconclusive as both Red Bull Racing drivers struggled for mileage.

After some early trading of quick times, Sainz took control of the session once the soft-tire runs started with a time of 1m42.587s. Leclerc joined the session late after his Ferrari team changed his floor, leaving him almost 10 laps down on Sainz by the end of the hour and without a representative long-run simulation.

After a short stint on mediums, the Monegasque switched to a set of softs in the final six months, but he struggled to get the best from them, improving his fastest lap by less than 0.1s He ended the hour 0.208s adrift of the sister car.