When Lewis Hamilton won the third of his four Formula 1 world titles with three races to spare in 2015, he subsequently went off the boil - struggling to perform with the same intensity and focus that propelled him to that glory in the first place.
Hamilton lifted off the gas and allowed Nico Rosberg to win three races in a row, which handed Hamilton's arch rival some useful momentum to carry through that winter and build into a successful title charge the following season. On the evidence of the 2017 Abu Dhabi Grand Prix, Hamilton should be wary the ghosts of the past don't come back to haunt him.
There was a sense of deja vu about the way Hamilton's season slightly tailed off again. He won his fourth world championship with two races to spare, but hasn't tasted victory in any of the final three.