Ferrari team principal Fred Vasseur believes that Formula 1's backmarkers disobeying blue flags ultimately cost Charles Leclerc second in the Mexico Grand Prix.
Leclerc had a gap of over three seconds to Lando Norris going into the final 15 laps of the 71-lap affair at the Autodromo Hermanos Rodriguez but had to watch his advantage dissipate when the two started to lap traffic - encountering Lance Stroll, Liam Lawson and Franco Colapinto.
