To get the business part of this out of the way first, Carlos Rogers isn’t going to play on Sunday unless a miracle occurs. He was listed as “questionable” going into the game in Green Bay, but there was no chance he was going to play. He finally started running on Monday, and he did his first sprints yesterday.

“Being able to run and sprint 10 to 20 yards. Stop and continue to go. If I can’t do that, I don’t want to set it back. If I pull it again, I’m done for the rest of the season for sure,” said Rogers.

He also told me he hasn’t done any side-to-side movement yet at all. The only good news: backpedaling doesn’t bother him. But Rogers — who was sweating during his interview after sprinting outside — said a hamstring injury is more difficult to deal with for a cornerback than a lineman, because of all the starting and stopping.

“It’s frustrating. Especially to sit in meetings, taking notes not knowing if you’re going to play or not,” said Rogers, who is dealing with a hamstring injury for the first time. “I’m progressing. I’m trying to be aggressive with it, but not be too aggressive and hurt it again.”

One thing about the 49ers’ next game: against Carolina the 49ers won’t play nearly as much nickel as they did against Green Bay. The Panthers are a balanced offense and Steve Smith, their best receiver, has been dealing with a torn PCL in recent weeks and may not play either. In the first time San Francisco played Carolina, Tramaine Brock was the No. 3 cornerback and he only played 23 snaps of the team’s 67 defensive snaps.

“When I come back I’m not coming just to play nickel, play a few snaps. If that’s the case I’m not healthy. You would rather have some of the corners out there that’s healthy than to play with me, even though I’m 60-70%,” said Rogers.

60-70%? He’s not playing. But he was all smiles during pre-practice warmups, even though he wasn’t in uniform.

Carlos Rogers Tramaine Brock

Carlos Rogers SF 49ers hamstring injury

Lots of laughter on the practice field today — Jim Harbaugh made his rounds as the team stretched, and whatever he said to Justin Smith and Ray McDonald left them in stitches (not literally, as everyone but Rogers practiced in full today).

Jim Harbaugh Justin Smith 49ers practice

Jim Harbaugh Justin Smith Ray McDonald

Justin Smith Ray McDonald Jim Harbaugh

Justin Smith Ray McDonald laughing

Justin Smith Ray McDonald 49ers

Lastly, there’s no one on the team with a more varied and envied on-field shoe collection than Michael Crabtree. Crabtree is sponsored by Jordan Brand, and he takes full advantage. He’s been wearing gold and white Jordan 12s quite a bit this season, but I’m a closet sneakerhead and for the life of me I can’t figure out what these are.

Michael Crabtree Jordans

Michael Crabtree Jumpman

Anybody?