Well, they certainly didn't build Vegas on days like today.
The public destroyed the books on Sunday, as favorites covered eight of the 10 games played in the afternoon, capped off by the Dallas Cowboys forcing overtime against the New England Patriots and then ending the game on a touchdown, thus covering the 3.5-point spread.
"The Cowboys covering and the game going over was pretty much the worst-case scenario of the day," said bookmaker John Murray at the Superbook in Vegas. "The final damage isn't known yet because of parlays going to Dodgers, Steelers and Bills. But it's going to be a rough weekend for sure."
"It was a monumental day for our bettors, especially after the Cowboys cover," said Craig Mucklow, director of trading for Caesars Sportsbook. "Their best Sunday of the year."
PointsBet spokesman Wyatt Yearout told The Action Network that Week 6 is on pace to be the worst NFL week of the year for the books.
DraftKings spokesman Stephen Miraglia also confirmed it was the worst NFL week this year for their book.
Following the morning game in London when the underdog Jacksonville Jaguars beat the Miami Dolphins, almost everything went the way of the public.
Including the Tampa Bay Buccaneers failing to cover by a half of a point against the Philadelphia Eagles on Thursday night, favorites are 8-4 going into the Sunday Night Football game between the Pittsburgh Steelers and the Seattle Seahawks. Only one other week this year, have favorites achieved an over-.500 cover record. Last week, they were 9-7.
On Sunday, huge public favorites in the Kansas City Chiefs and the Los Angeles Rams easily covered their 6.5- and 7.5-point spreads against the Washington Football Team and the New YorkGiants, respectively.
The Indianapolis Colts, who closed as an 11-point favorite despite having the same 1-4 record as the Houston Texans, beat them by four touchdowns. Minnesota (-2) held on in overtime after a late charge by the Carolina Panthers to cover their 2.5-point spread.
The Baltimore Ravens, Cincinnati Bengals and Green Bay Packers also covered as favorites in their games.
The only two dogs who covered — the Las Vegas Raiders (+5) and the ArizonaCardinals (+3) — both won outright.
Said the Superbook's Jay Kornegay: "It's all good. We've been on the canvas before."