The 49ers are three-and-a-half or four-point favorites, depending on the book.
The 49ers are favored to win the game, which has been the case with each playoff game the team has played thus far. Meanwhile, the Ravens are the underdogs for the third straight game. Baltimore triumphed in that role against the Denver Broncos in the divisional round and again against the New England Patriots in the AFC Championship Game.
San Francisco opened as a five-point favorite over Baltimore, according to Odds Shark, but the line has since moved, and the Niners are now three-and-a-half or four point favorites depending on the book. The over/under for the game is either 47 or 47.5 depending on the book after opening up at 49.
The Ravens have been successful underdogs, but the 49ers haven't yet disappointed as favorites. Something has to give.