F1 ENGINEER Calum Nicholas says he was left "broken" by the death of Jules Bianchi after his Japanese Grand Prix crash.
As part of the Red Bull driver's team, Nicholas has helped propel Verstappen to four straight F1 world titles.
The Red Bull engineer worked with the French F1 driver at Marussia as a mechanic back in 2011 - his first job in the paddock.
Since leaving Marussia at the end of that season Nicholas has become a familiar face on Netflix's hit show Drive to Survive as a key engineer in Max Verstappen's pit crew.
He was the first F1 driver to die from injuries that occurred during a Grand Prix since Brazilian driver Ayrton Senna.
