Multiple Vegas sportsbooks opened the Over-Under for Super Bowl LI at a record 58, eclipsing by one point the record set seven years ago by Saints-Colts.
Then they started raising it. All fans at CG Technology sportsbooks bet Over on Sunday night, prompting the books to quickly move to 58.5.
The Over is 25-24 in the big game (there was no official total listed for the first one back in 1967). In 2010, when the total was 57, the Under cashed in New Orleans' 31-17 win over Indianapolis.
Other books opened this year's total at 57.5 but quickly moved upward. At least one offshore book was dealing 59.5 Sunday night.
Nick Bogdanovich, director of trading for William Hill US, said the public's enthusiasm for betting Over played a big part in his 58 opener.
"Both these teams are scoring like crazy, and the public loves to bet Super Bowls over," he told SportsLine on Sunday night. "I'm going to be as high as humanly possible these next two weeks."
Books almost universally opened the spread at Patriots -3.
Last year's 24-10 Broncos win easily stayed under 43.5 and ended a three-year Over streak.
The Falcons posted an incredible 15-2-1 Over/Under mark, easily the NFL's most lopsided. New England's top-ranked scoring defense helped the team stay Under in 10 of 18 games.
"Given the efficiency of these offenses, we did not hesitate making this the highest total in Super Bowl history," said Scott Cooley, odds consultant for BookMaker.eu. "The public bettors won't think twice about betting the Over, but we do expect to see some smart money on the Under."