Lewis Hamilton will have to go from second on the grid in tomorrow's Singapore F1 Grand Prix after Ferrari's Charles Leclerc was quickest in qualifying today.
Sebastian Vettel was third, Red Bull's Max Verstappen fourth - and Hamilton's Mercedes team-mate Valtteri Bottas fifth.
"I am extremely happy about today," said Leclerc after today's session.
"It was a very good lap but there were some moments where I thought I lost the car, but I got it back.
"We came here knowing that it would be a difficult track for us but the team has done an incredible job to bring the package we needed. I had a tough Friday, it was not my day, and I didn't feel comfortable in the car, but the hard work has paid off."
Reigning world champion Hamilton says he was surprised by how quickly Ferrari went today: "I don't know where Ferrari picked up their pace today. Charles put some great laps in and it needed something special in the end.
"It was as much as I could get out of the car but I am happy to be on the front row and in the mix with them so we can divide them. We can be aggressive tomorrow."