Michael Vick said stepping into the situation he finds himself in, replacing the injured Ben Roethlisberger as the Pittsburgh Steelers’ starting quarterback, is something he was born to do.

And don’t expect the short week to bother him as the Steelers host the 0-3 Baltimore Ravens on Thursday.

“I’ve got plenty of confidence; I feel like this is what I was born to do,” said the 35-year-old Vick, who is in his 15th season. “I’m not a young guy anymore; I’m a seasoned veteran.

“It’s a short week, but we’re all professionals. Just got to get in [Monday] and grind. It’s still my normal routine.”

Roethlisberger injured his left knee in the third quarter. Though the severity of the injury is not yet known, Roethlisberger is expected to miss at least four weeks, a source told ESPN NFL Insider Adam Schefter.

Vick stepped in and helped the Steelers hang onto a 12-6 win over the Rams.

“If [Vick] plays next week, he’s got a full week of preparation,” Steelers coach Mike Tomlin said. “My standard of expectation would be a little different under those circumstances.

“[Vick’s performance] was above the line today. He got us out of the stadium.’’

Vick called Roethlisberger the “centerpiece” of the team.

“Ben’s a guy we all look up to in this locker room, but I was brought here for a reason,” Vick said. “I’ve just got to hold the spot until Ben comes back.”

Vick has only had about a month to learn the vernacular of offensive coordinator Todd Haley’s system, the third system Vick has worked in after playing three seasons with the New York Jets and the previous five seasons with the Philadelphia Eagles.

“I’ve put it together the best way I can,” Vick said. “I’ve had to learn it all, but I feel good where I’m at. I can prepare myself to play like I did today.

“I wish I could have done some things better, but that will come in a week’s work.”

Vick completed five of six passes for 38 yards in just over a quarter of work.