Colin Smith is closing in on the NFL single season sack record. He needs five sacks in the final four games to match Michael Strahan the record of 22 point five. Which he set in 2001. But all the Smith certainly hasn't gotten to this point all by himself. Justin Smith gets a lot of credit because he's the defensive tackle with the lines up next all of Smith. And a lot of offense opens up. Run lanes. For Smith to get through. Also not to be overlooked is the play of the 49ers secondary. Last season Carlos Rogers was the only 49ers quarterback to make it to the Pro Bowl this season the team is also getting outstanding play from twelve round. Chris -- Now and added wrinkle in this game is that maybe the 49ers won't be at full strength. Drove -- has missed practice time early in the week with a hamstring injury and -- Smith himself he's been limited because of a shoulder strain. More from that deep inside or online at CSN Bay Area dot com and -- all good coordinators will do Greg Roman Brady himself. And not really on her.