Staley

2. The Eagles can't physically intimidate the Falcons' 3-4 defensive scheme. Though the Eagles have the ability to pound the ball straight ahead behind powerful tackles Tra Thomas and Jon Runyan, the Eagles prefer hitting running plays on angles and working screen and short passes to Duce Staley. The Falcons ranked 19th defensively giving up 333 yards a game. They tend to bend but not break. 3. Falcons quarterback Michael Vick grew up as a fan of Steve Young and Randall Cunningham so it will give him a few flashbacks of watching Cunningham run around in Veterans Stadium. Vick certainly wasn't intimidated playing in Lambeau Field on Saturday. In fact, he was amazingly calm. His biggest worry is a talented Eagles secondary that offers some of the best and most complicated zone blitzes in the game. Vick isn't going to risk throwing the ball much into the Eagles secondary. They will prefer mixing outside running plays by Vick with inside runs by Warrick Dunn and T.J. Duckett. 4. The biggest question is how rusty Donovan McNabb will be after missing most of the second half of the season with his broken ankle. Before breaking the ankle, McNabb wasn't as accurate as a thrower in games in which he ran the ball. Expect McNabb to be more of a pocket passer in this game. His ankle will still be sore, and the cold weather and hard turf won't help. Still, if he can work his three- and five-step drops and step up into the pocket to make his throws, he could give the Falcons' zone defense a lot of problems. 5. Thanks to the return of Duckett, the Falcons' red zone production improved against the Packers after five weeks of poor play. Duckett, at 255 pounds, is 75 pounds heavier than Warrick Dunn. It's hard for one or two defenders to bring him down on first impact. Though Dunn is the featured and more explosive back, Duckett has the ability to wear down a defense. Of course, he has never faced a middle linebacker as big and as strong as 300-pounder Levon Kirkland.

	Johnson

2. Coming off his back problems, Brad Johnson can't afford to take too many hits. Of course, he is playing behind one of the shakiest offensive lines in football. Johnson might be a standing target, but the 49ers haven't been getting consistent heat on quarterbacks. This might be the right matchup for the Bucs' offense and the perfect team for Johnson to play coming off his problems. 3. The 49ers pass defense knew it dodged the bullet against the Giants. Cornerback Jason Webster couldn't play because of an ankle injury. Ahmed Plummer, the team's best cornerback, was beaten for 10 consecutive passes because he was playing with a groin injury. Zack Bronson, returned for the first time since October but he had trouble down the stretch because his foot was sore. Don't you think Keyshawn Johnson will try to be physical with this unit. 4. The 49ers are really banged up along their offensive line and they could be overpowered by the Bucs defensive line. Left tackle Derrick Deese can barely make it through games because of his high ankle sprain. Right guard Ron Stone couldn't finish because of an ankle sprain that might be a little worse. With them out, the 49ers could be using two rookies along the line -- guards Kyle Kosier and Erick Heitmann. Not good matchups against Warren Sapp and the guys. 5. Should the Bucs take the lead, will their lack of a running game come back to haunt them? The Bucs averaged only 97.3 yards a game on the ground. Still, the 49ers defensive line is light. Sound to me, that the second-half answer might be the power and domination of Mike Alstott. Michael Pittman is more dangerous as a pass-catcher out of the backfield, but he's doesn't break many big plays doing that. With the lead, the Bucs might be in good hands with Alstott. John Clayton is a senior NFL writer for ESPN.com.