Why Red Bull has dropped Gasly for Albon in F1

Red Bull caused a shock in the Formula 1 summer break by announcing it has dropped Pierre Gasly back to Toro Rosso, replacing him with rookie Alexander Albon - just over a week after the team said Gasly's drive was safe until the end of the year. Scott Mitchell explains why Red Bull felt the time was right to make the change, why it chose Albon over the more experienced Daniil Kvyat, and what it means for Red Bull's second seat alongside Max Verstappen for 2020