George Russell will begin Sunday's Singapore Grand Prix from the pit laneHe has been demoted to the back of the grid after taking a new power unitMercedes driver had already exceeded his season's limit for most components24-year-old had complained about steering and braking issues in qualifying
View more: George Russell will start Singapore Grand Prix from the BACK of the grid after his Mercedes required a new power unit after the British driver complained of problems negotiating corners in qualifying