Canadian driver Lance Stroll (Racing Point) - in a big surprise - starts Sunday, from first place in the Turkish Grand Prix, in the World Championships of the first category (Formula 1).
Britain's Lewis Hamilton (Mercedes) will start from sixth.
Stroll Saturday achieved the fastest official test time on the 5,340-meter track, with an average rainfall of 1 minute 47 seconds and 765 milliseconds.
Lance Stroll came in the lead, followed by Dutchman Max Verstappen (Red Bull) in second place, then his Mexican teammate Sergio Perez (Racing Point) from third.
Thai Alexander Albon (Red Bull) will start from fourth, followed by Australian Daniel Ricciardo (Renault) from fifth.
And in a big surprise, Britain's Lewis Hamilton (Mercedes) will start from sixth.
The race, expected to be from 58 laps of 309.7 km, is scheduled to begin at 13:10 Sunday afternoon (11:10 Spain time and 09:10 GMT).