Previously concussed quarterback Marc Bulger is going to start Sunday against the Packers. According to the many “doctors” on various message boards, this is a bad idea.

Memo to the faux docs: First, Bulger is a smart guy. When it comes to a head injury, he wouldn’t put himself in a position to risk further damage. That’s why he didn’t play last week after his symptoms recurred.

Second, Scott Linehan is particularly cognizant of what repeated blows to the head potentially could mean. One of his brothers, who had suffered concussions, died at an early age of Alzheimer’s disease - although there is no proof that a direct link exists.

Third, specialists - plural - have told Bulger that it’s safe for him to return.

So, please, understand that the proper safeguards are in place and have been followed stringently. Time to stop the second-guessing.

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He’s the smallest guy in the locker room, but 5-8, 170-pound Darius Vinnett is making a big impression on special teams. The speedster from Arkansas, an undrafted rookie, had a team-high three special-teams tackles last week in Cincinnati.

“Coming in here, I knew that was going to have to be my role,” Vinnett said. “I’ve just got to get in where I fit in.”

A cornerback by trade, he played on special teams only briefly for the Razorbacks. But he’s grown to like the assignment. “It’s fun to go out and have the opportunity to make plays,” he said. And what makes him so effective?

Well, his 4.32 40 speed helps a lot. But also . . .

“To be a special-teams player, you have to have the want-to,” Vinnett said. “I pride myself in everything I do on the field, and just try to go down there and make plays when I can.”

Of course, the ultimate goal is to carve out a spot for himself on defense. He fervently rejects any notion that he’s too small to play corner in the NFL.

“I don’t think my size will hold me back. If it was all about my size, I wouldn’t be here,” Vinnett said. “I just have to be patient and wait for my opportunity, and when I get my opportunity, be ready.”

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Notes & quotes:

>>Brett Romberg (ankle) finally is healthy, but Andy McCollum will start at C on Sunday.

>>Thanks to a large influx of ticket-buying Packers fans, the game is sold out and will be televised locally on KTVI, Channel 2.

>>Rob Petitti (concussion) will sit again, meaning that Brandon Gorin likely will go the distance at RT.

>>You have to feel good for rookie WR/KR Derek Stanley, who was promoted to the 53-man roster this week and could be the primary returner vs. the Packers. Stanley, a seventh-round draftee from D-III Wisconsin-Whitewater, has been on the practice squad all season.

>>Former Rams DT Ryan “Big Grease” Pickett is having a standout season for the Packers.

All for now. . .