Not sweating over 49ers' defensive issues

August, 28, 2012
8/28/12
12:53
PM ET
Regular blog commenter 4949Centennial hit the NFC West mailbag after watching the San Francisco 49ers' defense struggle against Peyton Manning and the Denver Broncos in the team's third preseason game.

"How concerned 49ers fans should be after Denver game?" he asks. "IMO, not much, but wanted to get your take."

Sando: The 49ers have a well-coached defense stocked with front-line talent. They'll be fine as long as their key players remain available to them. Aldon Smith's health is one variable to watch.

The 49ers are not going to dominate on defense from wire to wire this season. They open at Green Bay. They play road games against New Orleans and New England. Even last season, the 49ers gave up yardage in huge chunks against the best offenses they faced.

To review, "The 49ers allowed 422.5 yards per game last season when facing Michael Vick, Matthew Stafford, Eli Manning and Tony Romo, up from 270.1 yards per game against all other quarterbacks. Aaron Rodgers, Tom Brady, Drew Brees and Jay Cutler join Manning and Stafford on the schedule this season."

The 49ers should be better on defense even if their final stats aren't as good. They'll be more familiar with the scheme. They should be better at cornerback. The front seven remains fearsome.

But it's also possible the defense will find itself in tougher situations. The offense was sensational in avoiding turnovers last season. A few more turnovers would put opponents in better position to score points. The special teams were similarly dominant last season. A less dominant performance in that area would put additional stress on the defense.

I'm guessing the 49ers will take a couple steps backward from a statistical standpoint. But their defense should again be a strength and something that helps their chances in the postseason.

Some of the most dominant defenses in NFL history feasted on weak quarterbacks. As we discussed, the 2000 Baltimore Ravens faced Jay Fiedler, Brad Johnson, Kordell Stewart, Steve McNair, Mark Brunell, Vinny Testaverde, Jake Plummer, Kent Graham, Tim Couch, Scott Mitchell, Akili Smith, Doug Pederson, Ryan Leaf and a declining Troy Aikman.

How the 49ers' schedule shapes up will hinge, in part, on how well several less-proven quarterbacks fare this season. That list includes Christian Ponder, Mark Sanchez, Ryan Fitzpatrick, John Skelton/Kevin Kolb, Russell Wilson, Sam Bradford and Ryan Tannehill.

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