NEW ORLEANS — The elusive presence of San Francisco 49ers quarterback Colin Kaepernick could become a unique challenge for the Ravens' defense Sunday night.

Should they fail to contain the 49ers' unpredictable read-option Pistol offense at the Mercedes-Benz Superdome, winning the Super Bowl shapes up as a challenging proposition for the Ravens.

The Ravens have already been defeated twice this season by athletic quarterbacks, falling to the Philadelphia Eagles' Michael Vick and the Washington Redskins' Robert Griffin III. In those losses, the Ravens allowed a combined 906 yards of total offense.

“If we get a chance to hit him, we want to hit him,” Ravens strong safety Bernard Pollard said. “In Baltimore, we don't roll that way. We're going to hit you. He's basically a running back who can throw the ball very well. You look at Robert Griffin III, you look at Kaepernick, and they're very special talents.

“They're guys who can kill you with both their arm and their legs. It goes back to being smart as a defense. Everyone can't try to do everyone else's jobs. If you do that, they're going to find an opening.”

The keys to silencing the free-wheeling Pistol and Kaepernick, are rooted in dedication to assignment football: containing the halfback dive, the quarterback option keeper and accounting for the pitch to the halfback as well as a full-scale passing game.

Kaepernick is a strong-armed 6-foot-4, 230-pounder reminiscent of former Eagles quarterback Randall Cunningham with the capability to dash away from fastest defenders and the key to slowing him down will be to create hesitation.

The Ravens allowed Vick to pile up 371 passing yards and a touchdown run during a 24-23 loss where he was intercepted twice.

And they faltered against the Redskins during a 31-28 overtime setback as Griffin completed 15 of 26 passes for 242 yards, one touchdown and no interceptions for a 102.4 quarterback rating.

In the playoffs, Kaepernick has been electric.

He has completed 33 of 52 passes for 496 yards, three touchdowns and one interception for a 105.9 quarterback rating. And he has rushed for 202 yards and two touchdowns in two playoff games.

“They are doing a good job with it,” said Ravens inside linebacker Ray Lewis, whose final NFL game will be spent chasing Kaepernick. “When you do watch the film, a lot of people who played against them just never communicated at all. I believe that’s one of the advantages of what we have as a defense.

“We do a job of communicating real very well, whether you have the dive, whether you have the quarterback. How are you going to play this? How are you going to play that? If you watch the film, you can tell that a lot of people played against the read-option just played as individuals.”

The best thing the Ravens did against Griffin was hit him often as he was sacked three times with Pro Bowl defensive tackle Haloti Ngata generating a lot of inside pressure to disrupt the Redskins' option plays. He also injured Griffin's knee, forcing him out of the game.

For Ngata, this game brings back a lot of memories of the Ravens' Dec. 9 game at FedEx Field.

“They’re like a Redskins team,” Ngata said. “They have a mobile quarterback that can run and throw the ball. They are similar that way. They run option plays. They kind of remind you of a Washington Redskins team.

“It's rough. We have to try to cover all our bases because you have to worry about the running back but the quarterback can also run or throw the ball at any time. So, it's going to be tough to do it all the time. If we communicate well through all those plays, we'll be fine.”

Now, the Ravens face arguably as tough or tougher a matchup against Kaepernick. The heavily tattooed 2011 second-round draft pick from Nevada completed 62.4 percent of his throws for 1,814 yards, 10 touchdowns and three interceptions after taking over for an injured Alex Smith.

“Colin Kaepernick has given them a more explosive nature that they didn't have before,” former 49ers quarterback Steve Young said. “That makes them even more dangerous. The Pistol has created an outsized dilemma for the defense, and it's a pretty simple wrinkle for offense. That's perfect for offensive football because you want defenses to be all atwitter about something that you can run your whole offense from.