Kimi Antonelli's relentless speed is a "luxury problem" giving Mercedes grey hairs

Kimi Antonelli kept his Mercedes at the front in Madrid despite race engineer Pete Bonnington repeatedly reminding the 20-year-old Italian to respect track limits, forcing Bonnington to act like a schoolteacher over the radio. Having inherited the lead through an early virtual safety car on a circuit where overtaking proved impossible, Antonelli only had to keep it clean to win. His combination of raw speed and occasional indiscipline is proving a welcome but stressful headache for team principal Toto Wolff.