Charles Leclerc warned his Formula One rivals there is more to come from himself and Ferrari after he took pole at the season-opening Bahrain Grand Prix.
Ferrari have impressed in testing as F1 heads into a new era, with significant changes to the aerodynamics of the cars, a freeze on engine development and alterations to tyres hoped to lead to more competitive racing.
The signs were encouraging, predominantly for those cars using Ferrari power units, across the three sessions of qualifying in Sakhir.
Ferrari's form in testing carried through to Saturday's shoot-out for pole, with Leclerc leaving it late to leapfrog team-mate Carlos Sainz and secure his place at the front of the grid for Sunday's race.
Leclerc's time of 1:30.558 gave him his second pole in Bahrain and the 10th of his career.
Defending world champion Max Verstappen (1:30:681) managed to split the Ferraris, with his Red Bull team-mate Sergio Perez (1:30:921) behind Sainz (1:30.687) in fourth.
Mercedes may have to temper expectations of again contending for the drivers and constructors' championships, their struggles illustrated by Lewis Hamilton qualifying fifth and new team-mate George Russell coming ninth.
"It feels good. The last two years have been incredibly difficult for the team," Leclerc said afterwards, referencing Ferrari's consistent underachievement in recent years.
"We were quite hopeful that this new opportunity for us was an opportunity to be back in the front and I think we have worked extremely well as a team to find ourselves again in a position to fight for better places."
"I wasn't completely happy with my driving but managed to do that lap in Q3."
Asked if there is more he and the team can do, Leclerc replied: "Of course there is, also from the driving point it's completely different compared to last year. There's definitely much more to come hopefully from us.
"We were pretty sure that Red Bull was going to be quicker than us in qualifying, a little surprised that wasn't the case.
"I will still stay cautious. The pace is there, but the race is long and we need to stay on it."
Describing his performance, Verstappen said: "I think it was a bit hit and miss. Q2 seemed quite good but Q3 it was more of a struggle to get the balance together.
"We have a good race car, which at the end of the day is the most important.
"Here you want to be good in qualifying of course but you also really want to make sure your car is working for the race, because the tyres are really struggling a lot more there and it's a bit different to some other tracks."
Sainz expressed satisfaction despite missing out on pole.
"I'm quite happy with the progress I've made throughout the weekend," he said. "To be even fighting for the pole position was good news for me.
"Charles has been ahead the whole weekend and he deserves the pole position."
Provisional Classification
1. Charles Leclerc (Ferrari) 1:30.558
2. Mex Verstappen (Red Bull) +0.123s
3. Carlos Sainz (Ferrari) +0.129s
4. Sergio Perez (Red Bull) +0.363s
5. Lewis Hamilton (Mercedes) +0.680s
6. Valtteri Bottas (Alfa Romeo) +1.002s
7. Kevin Magnussen (Haas) +1.250s
8. Fernando Alonso (Alpine) +1.637s
9. George Russell (Mercedes) +1.658s
10. Pierre Gasly (AlphaTauri) +1.780s