From then on wins swapped between Marquez and Dovizioso, with only Rossi in Assen and Pedrosa in Valencia providing relief. The title went down to the final round in Valencia, in a tense battle between both Marquez and Dovizioso that ended in heartbreak for the latter.
Although Pedrosa won the race, Marquez won the war as he clinched his sixth world title at just twenty four years old. The chances of Dovizioso taking title honours were slim, and they were demolished completely as he crashed out of a frustrating race. Team orders told Lorenzo to let Dovizioso past, and when “suggested mapping 8” - which clearly meant “let him through” as there aren’t 8 engine maps on a GP bike - popped up on his dashboard, he should’ve done exactly that. But Lorenzo knows best, apparently. He continued to push on in front, but a small mistake sat him upright which let Dovizioso through with minimal effort. The Ducatis didn’t finish the final race of the season, but judging by their overall performance and progression they’ll be a force to be reckoned with next year.
Source : http://www.telegraph.co.uk/cars/features/motogp-2017-season-review/