Former F1 driver Jolyon Palmer has revealed why he thinks Sergio Perez was at fault for the dramatic late collision with Carlos Sainz during the Azerbaijan Grand Prix. Sergio Perez initially passed Charles Leclerc for second at Turn 1, before being immediately re-passed by the Ferrari driver. This enabled Carlos Sainz to seize on an opportunity to take third, but coming out of Turn 2 both collided and crashed into the barriers. The crash caused both to retire on the spot and Perez branded Sainz an “idiot” over team radio, as he gave up crucial points for Red Bull in the Constructors’ Champions…