Valteri Bodas completed his Portuguese Grand Prix training on Saturday in second speed with Mercedes teammate and Formula One Championship captain Lewis Hamilton.
Finn, who was quick in both sessions on Friday in the Alcarve roundabout near the southern city of Portimavo, landed in a fine effort of 16.654 seconds per minute.
Hamilton, the six-time world champion who could have won his 92nd career victory on Sunday, was 0.026 slow on a sunny but cold morning after leveling the Michael Schumacher milestone.
Both drivers made mistakes, and Hamilton monitored through the gravel at one point.
Red Bull’s Max Verstappen was fourth in the timesheets at 0.158, with Alpadori’s Pierre Casley – the car on fire – on Friday.
The session ended a minute earlier when Sebastian Vettel’s Ferrari went over it and the drain cover loosened on the 14th turn exit.
Mercedes has qualified for every race so far this season and looks set to extend that run to 12 in a row on Saturday.
While the Red Bull form is likely to wait at least another week, the team could win the seventh builders’ title following Sunday’s results.
After 11 races Hamilton is clearly 69 points ahead of Botas.