News, notes and quotes from the San Francisco 49ers, who are working out this week in Hertfordshire, England, east of London, for Sunday's international game against the Denver Broncos at Wembley Stadium:
-- The team promoted cornerback Tramaine Brock from the practice squad to the 53-man roster and waived safety Chris Maragos. It's likely Maragos will be signed to the practice squad if/when he clears waivers.
-- The following players did not practice Wednesday: tight end Vernon Davis (ankle), linebacker Ahmad Brooks (knee) and cornerback Tarell Brown (back). Running back Anthony Dixon (hamstring) and cornerback Nate Clements (ankle) had limited practice. Already declared out for the game are QB Alex Smith (shoulder) and center Eric Heitmann (neck).
-- If you wondering whether the 49ers will elevate quarterback Nate Davis to the active roster, don't. Coach Mike Singletary said he will not promote Davis, at least not now, meaning the 49ers will have just two quarterbacks, Troy Smith and David Carr, available for the game. There will be no emergency third quarterback.
"Right now, I just wanted to make that move this week," Singletary said. "Nate Davis is something that we'll look at later."
Singletary was asked his impressions of the Oakland Raiders' 59-14 rout of the Broncos and whether the 49ers could take anything from that game after watching the tape.
"You almost have to just throw it out," he said. "It's an amazing game. I don't think I have ever seen anything like that. You've got to be kidding me. Absolutely amazing, everything just fell their way, not that they didn't force some of those things. I mean, the Raiders really got after them, but the bottom line is I don't think I've ever seen a game like that where so many things fell for (one) team and not the other one."