Texas Man to Drop $4 Million in Largest-Ever Wager at Kentucky Derby On 4/29/21 at 7:12 PM EDT Jim McIngvale has become notorious in Houston for mixing business and pleasure. His business is selling mattresses, and his guilty pleasure is laying bets on big sporting events. He's taking his pocketbook to Louisville this weekend to place a record bet. He's known in the greater Houston area as "Mattress Mack." Sometimes he makes wild wagers on Houston-area teams to win titles. In return, anyone who buys pricey mattresses at his Gallery Furniture stores get their money back if his home team wins. In 2017, he refunded money because the Astros won the World Series. In 2019, he lost his bet on the Astros but got the revenue from selling furniture.