Russell crashed out on the final lap of the race at the Marina Bay Street Circuit while running in third-place.The British driver looked on course to win the race thanks to a ballsy strategy from Mercedes to pit under the Virtual Safety Car for fresh rubber.Russell was unable to pass the McLaren of Lando Norris - who was in between him and race leader Carlos Sainz.On Lap 62, Russell brushed the wall on the entry of Turn 10 before clattering in the wall.Russell admitted he was “heartbroken” after the race - but teammate Lewis Hamilton and team boss Toto Wolff…