ABOUT THE 49ERS (11-4-1): San Francisco has a solid candidate for Defensive Player of the Year in Aldon Smith and has surrendered an average of 13.9 points in eight home games. That defense is keyed on the front line by tackle Justin Smith, who has been dealing with a triceps injury and missed the final two games of the regular season. Justin Smith was wearing an elbow brace but has been practicing and is listed as probable for Saturday. On the other side of the ball, the 49ers will be giving the Packers a much different look than in Week 1. Kaepernick passed for a career-high 276 yards in a Week 17 win over the Arizona Cardinals and has opened up the playbook with his ability to extend plays with his legs and one of the stronger arms in the league. The 25-year-old finished up the regular season with 10 touchdowns and three interceptions and was at his best in some of the biggest games, including a four-touchdown performance at New England in Week 15.