Pittsburgh Steelers head coach Mike Tomlin is staying grounded, despite the team's best start to an NFL season in franchise history.

The unbeaten Steelers improved to 10-0 following Sunday's 27-3 victory over the Jacksonville Jaguars at TIAA Bank Field.

Pittsburgh – who have not won the Super Bowl since 2008 following their loss to the Green Bay Packers in 2010 – are well clear of the Cleveland Browns (7-3) atop the AFC North.

The Steelers have also recorded 24-plus points in 10 consecutive regular-season games, the longest streak in single-season franchise history, but Tomlin is refusing to get carried away.

"We did the job today. We checked the boxes," said Tomlin. "It wasn't perfect. But nothing is perfect about us except our record.

"We talked openly about that last night. We want to wear it the proper way. We want to step into stadiums and be prepared to fight and compete every week and understand that we are going to get people's best shot.

"So, I liked the general attitude today. We were able to get the job done and we will get ready for our short week."

Steelers star Ben Roethlisberger completed 32 of 46 passes for 267 yards, two touchdowns and an interception away to the Jaguars in Jacksonville.

The Steelers quarterback now has eight career seasons with double-digit wins, tying Drew Brees, Aaron Rodgers and John Elway for fourth-most in the league, per NFL Research.

The only players with more are Tom Brady (17), Peyton Manning (14) and Brett Favre (10).

"Just focus on one week at a time, and that's what this team has done," two-time Super Bowl champion Roethlisberger said. "We're not chasing perfection, we're chasing a Lombardi [Trophy]."

Pittsburgh's attention now turns to the AFC North showdown against the Baltimore Ravens (6-4) on Thursday.

"We are back in the AFC North, in the hot kitchen on Thursday night and we are honoured to do that, to entertain on that special day and be a part of that," said Tomlin.

"We don't take that for granted. We have some work ahead of us."