Mercedes has given the green light to both of their drivers to go ahead and fight for the world title.
Previously, the there has been talk of rules of engagement that are so lengthy they have been referred to as 'The Bible', but with the contructors' title now wrapped up for the German manufacturer, Toto Wolff has said there would be no more limitations for the two star drivers.
"There are no team orders and no limitations. May the better one win," he said.
Nico Rosberg currently holds a 33 point lead in the championship, and team chairman Niki Lauda thinks it's his title to lose.
"If nothing goes wrong in Nico's car, Lewis will not be able to do it this season," the F1 legend told Sport Bild.
"There are years that just don't work for you, and Lewis seems to have caught such a year," Lauda added.
Despite the season winding down and Hamilton still within reach, championship leader Rosberg insists he won't be changing his approach.
"I drive as though the score is nil-all," said the German.
"In football, it doesn't work if a team wants to manage a lead to the end - often, this only gives the opponent the chance to build back up again," added Rosberg.
This weekend the Formula One circus returns to the United States, a race where Hamilton is usually on top, although former F1 driver Marc Surer thinks that may not mean Rosberg is at a disadvantage.
He told the German broadcaster Sky: "But Rosberg has been winning races that normally Hamilton is better at, so he also has a good chance in Texas.
"What you can say is that Lewis must win the last four races, otherwise he can forget the title. He also must hope that Rosberg does not always finish second, and that he has some bad luck.
"But I am convinced that Lewis will try everything and not give up," Surer added.
Bahrain International Circuit - Winter testing