Oscar Piastri lit up his home crowd by topping second practice for the Australian Grand Prix, as McLaren, Mercedes and Ferrari traded early blows in a tightly contested opening to Formula 1’s new era.

The McLaren driver, racing at his hometown circuit, produced a late lap that put him two tenths clear of Mercedes rookie Kimi Antonelli, with George Russell a further tenth back in third. Beyond the headline times, Mercedes underlined their status as pre-season favourites with strong long-run pace that caught the paddock’s attention.

The day had begun with Ferrari firmly on top. Charles Leclerc led a one-two in first practice ahead of team-mate Lewis Hamilton, the Monegasque driver almost half a second clear of the field as Red Bull’s Max Verstappen and Isack Hadjar trailed behind.

But Ferrari’s momentum stalled as conditions changed. Leclerc failed to improve in the later session and slipped to fifth, suggesting a set-up misstep or difficulty in extracting performance from the cooler track. Hamilton, however, continued to look increasingly at ease in red, taking fourth and becoming the only driver to finish both sessions inside the top four.

Verstappen endured a scruffy day. A technical glitch sidelined him for almost half of second practice, and although he eventually emerged to go sixth, he was six tenths off Piastri’s benchmark. A wild trip through the Turn 10 gravel late on left his Red Bull with visible floor damage and raised questions over how much pace remains untapped.

Reigning world champion Lando Norris was only seventh after a clutch problem restricted him to seven laps in first practice. With just one clean push lap on fresh soft tyres in the afternoon, his one-second deficit to Piastri looked more like circumstance than a true reflection of McLaren’s internal balance of power.

Among the standout stories was British rookie Arvid Lindblad, who backed up fifth in first practice with eighth in the second for Racing Bulls, edging Red Bull newcomer Hadjar and underlining his reputation as one of the grid’s most exciting newcomers.

At the other end of the spectrum, Aston Martin’s troubles deepened. Persistent power unit issues left Fernando Alonso and Lance Stroll rooted to the bottom of the times, with Alonso’s best effort almost five seconds adrift after heavily curtailed running.

With McLaren, Mercedes, Ferrari and Red Bull all showing flashes of speed but none yet dominant, the competitive order remains tantalisingly unclear heading into qualifying.