Oklahoma opened in most markets as a 4.5-point favorite over Auburn in the Sugar Bowl, and the Sooners have been favored by as many as 6 in the leadup to kickoff.
The public loves the fact that OU comes in on a nine-game win streak, scoring 48 points per game.
Now, professional bettors have come swarming in on the underdog. Their big bets sent the line plummeting to Oklahoma -2 at most books.
That's a huge move crossing over the key number of 3.
"The sharps are all over Auburn," said Nick Bogdanovich, the top bookmaker for William Hill US and its 108 Nevada sportsbooks. "We've had some five-figure bets on Auburn, but there's plenty on the other side too because the public is all over Oklahoma.
"It's a two-way game."
CG Technology sportsbooks and BookMaker.eu also reported an influx of sharp action on Auburn.
The Over/Under is rising fast, too. Some books are dealing 67 after opening at 62. Bogdanovich said professional bettors apparently believe the Tigers will overcome their offensive inconsistency and put up a lot of points.
"I'll believe it when I see it," he said. "Auburn sort of stumbled down the stretch and Oklahoma played as good as anybody.
"It's a head-scratcher, but we'll see if [the professionals] are right."
Bogdanovich said he's confident the line will close below a field goal.
Auburn is 4-1 against the spread in its last five bowl games, and 5-0 ATS in its last five outside the SEC.
Oklahoma's "Big Game Bob" Stoops is 0-5 ATS in its last five outside the Big 12, and 3-7 ATS in his last 10 bowl games.