Of course, that doesn't necessarily mean that Garoppolo will play on Sunday against the Miami Dolphins.
"The fact that he's coming out today and getting a little more reps, it has (made me more optimistic)," Shanahan said. "I haven't seen him yet. I mean, he did a good job in walk-through, and we'll see how he goes. We're going to throw him in there today, and that will give me more of an opinion, at least."
Garoppolo has missed the last two games after sustaining his injury during Week 2 against the New York Jets.
Shanahan informed reporters that running back Raheem Mostert (knee) will also practice but be limited.
While Shanahan knows who his starting quarterback would be should Garoppolo not play on Sunday, he didn't want to reveal that player's name just yet.
"Yes, I have (decided on who would start)," Shanahan said, "but I'm going to hold that just because there is a difference between them, and if Jimmy can't go, I'd like Miami to find that out on Sunday. I've decided that.
"We'll get both of them reps because both of them do have to be ready in case Jimmy doesn't go, but if not, you guys will find that answer on which one's not dressed (on game day)."
Shanahan also provided the following injury updates:
- Defensive end Ziggy Ansah and cornerback K'Waun Williams will be placed on injured reserve soon.
- Cornerback Dontae Johnson is dealing with a groin injury.
- Cornerback Emmanuel Moseley is still in the concussion protocol.
- Safety Jimmie Ward will not practice today due to a wrist injury. Shanahan did not sound too concerned about the injury.
None of the players listed above will practice today.
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