Robert Kubica is back in the Williams car on the penultimate day of testing at the Circuit de Catalunya in Barcelona.
The Williams reserve and development driver will be behind the wheel of the FW41 on Thursday morning before he makes way for Lance Stroll in the afternoon.
Mercedes are another team on split duties again, with Valtteri Bottas picking up where he left off yesterday before handing over to Lewis Hamilton.
Stoffel Vandoorne will be hoping for a better day’s running in the McLaren MCL33, which sits bottom of the mileage charts once again with 355.
Red Bull’s Max Verstappen will be looking to make a statement of his own after Daniel Ricciardo’s record-breaking day on Wednesday.