Milk bottles in carnival games are meant to be knocked down.
MVP quarterbacks are not.
Green Bay's offensive line has had its hands full this season as it has tried, often unsuccessfully, to keep Aaron Rodgers from looking like a tackling dummy, and it doesn't figure to get any easier in Saturday night's NFC divisional game in San Francisco.
The 49ers' front seven is one of the most brutish in the NFL, and just the sight of Aldon Smith or Justin Smith is enough to make a quarterback wince.
Rodgers is the Packers' most precious commodity, the reigning league MVP and one of the finest quarterbacks of his generation. The Packers (12-5) will only go as far as he takes them, so keeping him upright is a priority. Yet Rodgers was sacked an NFL-high 51 times during the regular season.