SANTA CLARA The Packers acquired two former 49ers quarterbacks in the last few days, but offensive coordinator Greg Roman called the intelligence they might supply the enemy "a little overrated."
"And when you pin your hopes on stuff like that, there's a flip side to that coin, too, on what can happen," Roman said Thursday. "Scott (Tolzien) was a very good player while he was here. And I'm sure they're picking his brain. And it really is not going to have any impact on the game."
The 49ers cut Tolzien, who spent the last 2 1/2 seasons in San Francisco, and Seneca Wallace last week. Green Bay signed Wallace to the active roster and Tolzien to the practice squad.
Defensive coordinator Vic Fangio said he wouldn't change anything about his game plan against Green Bay largely because the 49ers didn't start implementing it until Tolzien and Wallace were gone.
Center Jonathan Goodwin agreed that the ex-quarterbacks' impact on the game probably has been overstated. But he also said the Packers made a good choice in picking up Tolzien in advance of playing the 49ers.
"If you're going to have somebody on your football team to ask questions, Scott Tolzien is a guy you would want, whereas some guys wouldn't have a clue," Goodwin said.
The studious Tolzien conceivably could point out the 49ers' offensive tendencies, reveal which players may be dealing with an unreported injury and discuss the team's protection verbiage at the line of scrimmage.
Knowing that, Roman decided to have a little fun with the Packers.
"I think it's really going to come down to the players on the field," he said. "I mean, I could say something clever like, 'Once they think they have all the answers, we change the questions.' And that may or may not be true. But I'm not going to say that."
Nnamdi No. 3 Fangio said he was "confident" that Nnamdi Asomugha, on the injury list this week with a collarbone injury, would play Sunday against the Packers and would be the third cornerback to enter the game.
That position tends to be on the field a lot, especially against the Packers, who use three and four receivers as much as any team in the league. Asomugha has been practicing in a blue no-contact jersey.
"He'll be the No. 3 guy starting the game on Sunday, unless something happens in between," Fangio said.
Team captains The 49ers voted for team captains this week, and the newest winners were linebacker Patrick Willis and quarterback Colin Kaepernick.
Under coach Jim Harbaugh, the team captaincy is a two-year term. Last year, the players elected defensive end Justin Smith and quarterback Alex Smith. Smith is with the Chiefs now, so the team voted for Kaepernick to take his place.
Safety C.J. Spillman, a gunner on special teams, is the special-teams captain this week.