The San Francisco 49ers have been favorites throughout the playoffs thus far, even over the top-seeded Atlanta Falcons. If you happened to bet on the underdog No. 1 seed, you were definitely burned. Now, the 49ers' seeding matches up with the betting lines, as they are taking on the Wild Card-entrant Baltimore Ravens in the Super Bowl.
After opening as five-point favorites, the line quickly moved to around four points within a few hours of being up on most books. It appears that a flush of money came in on the Ravens as the underdog pick immediately after they cruised to a relatively easy victory over the New England Patriots in the AFC Championship game.
Now, according to OddsShark, you can only find the 49ers as four-point favorites on Bovada, as most sites have moved even further. Sites like BetOnline and 5 Dimes have the 49ers at 3.5-point favorites.
Again, this means that a relatively steady stream of money has been coming in on the Ravens as the underdogs. The teams themselves are fairly evenly matched and the line appears dead on.
It's unlikely that the line really moves much more than it already has. San Francisco will probably remain favorites by at least a field goal all the up to the game. The over/under has been right around 47 points on most sites, so it's clear a defensive struggle and a 6-3 win for either team is not to be expected.
If you like to get caught up in the craziness of Super Bowl prop bets, SB Nation has a whole section devoted to it here.