Mercedes Confirms Frederik Vesti to Replace Kimi Antonelli for Barcelona FP1

Kimi Antonelli, the dominant force of the 2026 season, will skip the first practice session at the Barcelona-Catalunya Grand Prix. Mercedes has confirmed that reserve driver Frederik Vesti will step into the cockpit to satisfy the sport's rookie participation requirements for the weekend.

Why it matters:

While FP1 does not impact championship points, Antonelli's absence is notable given his historic trajectory this year. Leading Lewis Hamilton by 66 points after six rounds, the 19-year-old has fundamentally disrupted the grid. Any shift in the cockpit—even for a calibration session—is closely watched as Mercedes manages the workload of their young phenomenon.

The details:

• Rookie Mandate: Under 2026 regulations, every team must field a rookie in four FP1 sessions throughout the season.
• Wider Grid Changes: Other teams are also utilizing this rule in Barcelona:
  • Luke Browning will replace Alex Albon at Williams.
  • Colton Herta is set to make his FP1 debut for the newest entry on the grid, Cadillac, replacing Sergio Perez.
• The Substitute: Frederik Vesti, the official Mercedes reserve, is well-versed in the Silver Arrows' systems, having participated in several previous FP1 sessions.

The big picture:

Antonelli is currently enjoying a debut season for the ages. With five consecutive race wins and the recent record of becoming the youngest winner in the history of the Monaco Grand Prix, he has shifted the internal power dynamic at Mercedes. His massive lead over the veteran Hamilton suggests a generational changing of the guard.

What's next:

With Vesti handling the initial data gathering and baseline setups in Barcelona, Antonelli will return for FP2. The focus remains on whether the young champion can maintain his winning streak and extend his lead in the drivers' standings during the seventh round of the season.