Oscar Piastri ended the opening day of running at the Australian Grand Prix with the fastest lap of the weekend so far, delivering a 1:19.729 to lead a tightly packed group at the top of the timesheets.
The McLaren driver found more than half a second on his FP1 performance and finished the session 0.214 seconds clear of Mercedes rookie Kimi Antonelli, who continued to underline his growing confidence in the W15.
The early exchanges were dominated by long‑run data gathering, with several teams opting for hard tyres. Mercedes initially set the pace, with Antonelli and George Russell trading laps in the 1:21 range while Lewis Hamilton slotted in just behind them. Piastri soon joined the fray, moving to the top of the order as the first meaningful medium‑tyre laps came in.
The session’s first major time shift arrived when Russell bolted on soft tyres. His push lap not only moved him ahead of Piastri but also eclipsed Charles Leclerc’s FP1 benchmark by more than two‑tenths, briefly making him the fastest driver of the day.
Moments later, Antonelli went even quicker, becoming the first to break into the 1:19s with a lap that stood as the session’s best until Piastri’s late surge.
Piastri’s decisive lap of 1:19.729 came as the track reached peak grip, and neither Mercedes driver could respond. Russell ended the session third, 0.320 seconds off the McLaren, while Hamilton finished fourth, missing his teammate’s time by just 0.001 seconds.
Ferrari’s Charles Leclerc completed the top five, 0.562 seconds down, ahead of Max Verstappen, whose best lap was compromised by a high‑speed snap of oversteer at Turn 10 that sent him through the gravel and damaged the floor of his RB22.
Lando Norris recovered from his limited FP1 running to take seventh, while Arvid Lindblad once again impressed with eighth place, reinforcing the pace he showed earlier in the day. Isack Hadjar and Esteban Ocon rounded out the top ten.
Further back, Ollie Bearman led the midfield in 11th, followed by Nico Hülkenberg, Liam Lawson, Gabriel Bortoleto, Alex Albon and Pierre Gasly. Carlos Sainz completed only ten laps and finished 17th, narrowly ahead of Franco Colapinto and Valtteri Bottas.
Aston Martin endured another difficult hour, with Fernando Alonso and Lance Stroll classified 20th and 21st after limited running. Sergio Pérez completed just two laps before a suspected hydraulic issue stopped his Cadillac on track, leaving him last on the timesheets.