Super Bowl 2013, Ravens vs. 49ers: San Francisco Defensive 'Cheat Sheet'

USA TODAY Sports

With the 2013 Super Bowl less than a week away, the two SB Nation bloggers for the Ravens and Niners decided to "share" their secrets about the three phases of the game on our teams.

Here's the breakdown by Niners Nation blogger, David Fucillo take on the San Francisco 49ers defense, position-by-position, listing starters, reserves and commenting on the pros and cons of each position:


More: Ravens add Juan Castillo before SB run


Defensive line (3-4)
Starters: RDE Justin Smith (94), NT Isaac Sopoaga (90), LDE Ray McDonald (91)
Reserves: Ricky Jean-Francois (95), Will Tukuafu (48), Ian Williams (93)

The 49ers run a base 3-4, but are quick to jump to the nickel against stronger passing attacks. The amount of nickel you see could depend in part on how frequently Jacoby Jones gets on the fiel. In the nickel, Sopoaga comes off the field, Smith and McDonald move into the two defensive tackle positions, and OLBs Ahmad Brooks and Aldon Smith take over the defensive end roles.

Justin Smith is the key to this group. He missed the team's final two and a half regular season games with what was described as a partially torn triceps muscle, and his absence was noticeable. He clears the way for OLB Aldon Smith, and generally commands double teams on a lot of plays. He has acknowledged he is not 100%, but he is getting comfortable with his arm brace, and I expect the Ravens to double him a fair amount.

Sopoaga is solid at collapsing the pocket for the linebackers, and is very solid against the run. Ray McDonald does the dirty work opposite Justin Smith, and has proven to be a very solid defensive end. Ricky Jean-Francois is the utility lineman, able to fill in at both nose tackle and defensive end.

Linebackers
Starters: OLB Aldon Smith (99), ILB Patrick Willis (52), ILB NaVorro Bowman (53), OLB Ahmad Brooks (55)

The 49ers OLB corps is the best in the league. I normally would include the word "arguably", but when you have three linebackers selected first team All-Pro, and the fourth selected second team All-Pro, I don't know how much else needs to be proven. Smith and Brooks bring most of the pass rush heat, but the team does a good job of frequently sending Patrick Willis up the middle on blitzes. Willis and Bowman are both in on the team's nickel D, and then they generally rotate in the dime. Willis is the primary defender against tight ends, and likely will get plenty of work against Dennis Pitta. If either ILB gets hurt, Larry Grant is the first off the bench. If either OLB gets hurt, Clark Haggans is the first off the bench.

Secondary
Starters: CB Carlos Rogers (22), CB Tarell Brown (25), FS Dashon Goldson (38), SS Donte Whitner (31)
Reserves: CB Chris Culliver (29), CB Perrish Cox (20, CB Tramaine Brock (26), S C.J. Spillman (27), S Darcel McBath (28), S Trenton Robinson (30)

The 49ers secondary can be a bit up and down at times, in part because of the softer D we sometimes see between the 20s. The team does a good job of clamping down in the red zone, but they can give up a decent amount of yards at times. Just look at the first halves against Green Bay and Atlanta for proof of that.

They are an aggressive group, that can play with plenty of physicality. Chris Culliver is listed as a reserve, but if the 49ers go with a lot of nickel, as expected, he will get a lot of playing time. In the nickel, the 49ers move Carlos Rogers into the slot, and then insert Culliver on the outside. Rogers can be beaten in the slot, so his matchup will be the one to watch all game long. C.J. Spillman is the first safety of the bench, while Perrish Cox is the first corner off the bench. Tramaine Brock will get his share of time as well.

Check out my review of the Baltimore Ravens Defensive 'Cheat Sheet' over at Niners Nation right now!

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