Texas salesman 'Mattress Mack' places $4.5 million bet on Cincinnati Bengals to spring Super Bowl LVI upset

Jim «Mattress Mack» McIngvale, the Houston furniture salesman known to place giant hedge bets, has done it again — this time with the biggest single wager he's ever placed.

On Thursday, McIngvale drove across the Texas border into Louisiana, pulled over at a gas station, logged onto his mobile betting account with Caesars Sportsbook and placed $4.5 million in bets on the underdog Cincinnati Bengals at +170 odds to upset the favored Los Angeles Rams in Super Bowl LVI. If the Bengals spring the upset, the bet would net $7.7 million.

«I had to make like twenty $200,000 bets to make it work,» McIngvale told ESPN on Thursday night. «But I want to thank Caesars for taking it.»

Caesars Sportsbook said it was the second-largest bet the company has ever taken on the Super Bowl, eclipsing a $4.9 million money-line bet at -900 odds on the heavily-favored St. Louis Rams to beat the New England Patriots in Super Bowl XXXVI. The Patriots won 20-17.

The Return of the Mack for the Super Bowl‼️<a href=«https://twitter.com/MattressMack?ref_src=» https: www.espn.com>@MattressMack

just wagered $4,534,000 on the <a href=«https://twitter.com/hashtag/CaesarsSportsbook?src=hash&ref_src=» https: www.espn.com>#CaesarsSportsbook app in Louisiana on the Bengals (+170) to win over the Rams. Potential win: $7,707,800 This marks the single biggest mobile wager of all-time