Hamilton had revealed concerns before the race about his engine -- fitted overnight Friday with a new fuel injection system -- but on a near-perfect warm autumn afternoon in Texas he made a clean getaway when the lights went out.
Whether or not he had been instructed by team chief Toto Wolff to distance himself from his remarks, Lewis Hamilton did not look a happy camper.
"The championship is over when the last race is over, 23 points is a lot but you never know."
Lewis Hamilton was almost in tears with his head in his hands after the dramatic end to his race which has dealt a severe blow to his chances of securing a third drivers` championship in a row.
Mercedes are on course to wrap up their third straight constructors` title on Sunday.
Hamilton trails Rosberg by eight points after the German won the last race in Singapore.
Germany remains uncertain due to Hockenheim`s stated reluctance to host a grand prix other than in alternate years.
Ecclestone had warned in June that the 2017 calendar could be reduced to 18 races, although Monza was seen as one of those on the hit list at the time.
Mercedes can seal the constructors` championship in Malaysia with a one-two finish, but Rosberg sounded a note of caution about their rivals.
Defending champion Jorge Lorenzo passed Yamaha teammate Rossi with five laps to go to take second.
The smiling Red Bull driver finished second in Singapore last weekend, with Rosberg winning and triple champion Hamilton third.
Apple also invested $1 billion in Chinese ride-hailing service Didi Chuxing earlier this year.
German magazine Die Bunte published a story in December 2015 claiming the 47-year-old can take small steps with assistance.
The result lifts Rosberg on to 273 points with six rounds remaining.
Ecclestone was equivocal when asked whether he had been engaged for another years, answering: "Let`s see, let`s see..
Retirement is still far away, I only hope that I will decide it and not my body.