The 22-year-old later delved into his impressive effort, claiming he felt comfortable with McLaren's improvements at the circuit.
"The first lap was pretty solid. I was quite happy with it," he said.
"The last chicane I could've done a better job, but it was a good lap. On the second lap my first sector was good and the next two sectors, not so good. Happy to send it in P2, it's been a really good weekend for the team so far."
"Got upgrades on the car and put it in there quick. We thought we might have a decent chance around here, but still got to make it happen. Happy to be second for the team, second and third. Very very happy."
Gunning for first
Piastri achieved his best F1 qualifying result to date, becoming just the fifth Australian to start on the front row, quite an achievement in his debut season.
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