Coach Jim Harbaugh confirmed that RB Brandon Jacobs (knee) has done enough to earn a roster spot. A deep backfield and Jacobs' recent knee couldn't push him off the roster. It's bad news for Frank Gore's fantasy value, as Jacobs figures to take over as the primary goal-line back once his knee returns to 100 percent, likely by Week 2 or 3. Kendall Hunter remains the primary backup to Gore.