THREE THINGS THAT NEED TO GO RIGHT ...
Pressure Kerry Collins. Leroy Harris, a second-year lineman from North Carolina State, will be making his second career start, replacing injured center Kevin Mawae. The Titans gave up the fewest sacks in the NFL (12), but they allowed three in Harris' previous start.
Force turnovers again. Just like Miami, Tennessee didn't turn the ball over in the regular season (tied for third fewest). But the Ravens have forced multiple turnovers in nine of their 12 wins this season.
Finish the game defensively. The Ravens dominated the Titans' offense for 3 1/2 quarters. But 80 of Tennessee's 210 yards of offense came on its game-winning touchdown drive in the fourth.
... AND THREE THINGS THAT COULD GO WRONG
The Titans find a way to run the ball. Tennessee relies heavily on running backs Chris Johnson and LenDale White. The Titans are 9-0 when they rush for more than 100 yards as a team. The Ravens have allowed only two teams to break that 100-yard rushing mark this season.
The Ravens play undisciplined. The Ravens committed a season-worst 11 penalties in the first meeting with Tennessee. The biggest one was a questionable roughing-the-passer call on Terrell Suggs that kept the Titans' game-winning drive alive.
The kicking game stumbles. The Ravens' Matt Stover is the third-most-accurate kicker in NFL history (83.6 percent), but his success rate drops to 77.2 percent in the playoffs.