Could sacks be the 49ers Achilles heel?

Earlier this season, Alex Smith said taking a sack is “not the end of the world.”

I wrote a follow-up blog explaining that on every series in which an NFL offense allows a sack, it has just a 14 percent chance of scoring a touchdown.

Through the first nine games of the season, the 49ers offense has taken a sack on 28 drives, and scored a touchdown on just four of those drives – exactly 14 percent.

One more thing – the 49ers offense has allowed 29 sacks and the defense has garnered 17 sacks. That’s a negative-12 sack differential. Every Super Bowl champion over the last 10 years has had a positive sack differential.

Could sacks be the 49ers Achilles heel?

,