SANTA CLARA, Calif. (AP) -- Alex Smith and Aaron Rodgers spend a lot of time on their backsides, each having taken their share of hits this season.
   Rodgers, Green Bay's quarterback, has been sacked 41 times. For San Francisco's Smith, it's been 10 sacks in the 31/2 games he's played since taking over from Shaun Hill last month. In all, the two former first-rounders who got to know each other well when drafted in 2005 have combined to be sacked 175 times in their young NFL careers.
   Who would blame these two if they're a little sore at this stage? The quarterback who can stay upright come Sunday when the 49ers play the Packers at Lambeau Field could have a big advantage.