Mercedes is expected to wrap up the constructors' world championship in Russia later on Sunday. With Lewis Hamilton and Nico Rosberg locking out the front row of the grid, the team needs a 25-point ...

Mercedes is expected to wrap up the constructors' world championship in Russia later on Sunday.

With Lewis Hamilton and Nico Rosberg locking out the front row of the grid, the team needs a 25-point haul to guarantee the title with three races to spare.

"It's quite a historic moment," pole sitter Hamilton said, "it will be a historic moment for us and for me to be a part of this team's success."

Rosberg added: "I've been there since day one and it's very, very exciting to think that we're so close to that (title) now."

Team boss Toto Wolff admitted on Saturday that he began to think the constructors' title was now inevitable after the Japanese grand prix last week.

"I'm actually a pessimist," he told Auto Motor und Sport, "but after the double victory in Japan, I must say that it is barely possible anymore to get this out of our hands."

As for the remaining target, the drivers' crown, German Rosberg acknowledged on Saturday that with Hamilton having won the last three grands prix on the trot, the Briton has once again had the upper hand in Russia.

"Today Lewis was quicker," he said on Saturday, "all weekend really.

"Every race is important at the moment. We have four to go," Rosberg, who is now 10 points behind Hamilton, added.

Be part of something big

Mercedes poised to win constructors' title