THREE THINGS THAT NEED TO GO RIGHT ...
Give the ball to Willis McGahee. The former University of Miami star loves playing on his old stomping grounds. In four trips to Miami, he has averaged 91.7 rushing yards, including 104 last season.
Deliver big plays. The Dolphins allowed five pass plays of 25 yards or longer Sunday against the Houston Texans. This is the time to strike downfield.
Hit some big returns. Whether it's Yamon Figurs (knee) or someone else, the Ravens need to break some long runbacks against a vulnerable Miami team. The Dolphins have the worst kickoff coverage team and the fourth-worst punt coverage team.
... AND THREE THINGS THAT COULD GO WRONG
'Wildcat' goes wild. The Dolphins' trendy offensive scheme - the direct snap to the running back - has delivered a new wrinkle each week. This is Miami's best chance at confusing the Ravens' defense.
Turnover trend continues. Rookie quarterback Joe Flacco has thrown five interceptions in his past two games after getting picked off just twice in his first three games.
Chad Pennington has time in the pocket. The Ravens have managed just two sacks in two games. That can't happen against an accurate thrower like Pennington, who has recorded a rating of better than 100 for three straight games, the first Dolphins quarterback to do so since Dan Marino in 1994.