A Houston furniture salesman has placed a $3.5 million bet on the Houston Astros to win the World Series.

Jim "Mattress Mack" McIngvale is attempting to mitigate millions of dollars in potential refunds from a promotion.

If the Astros win, McIngvale would net $7.7 million.

For much of the baseball season, McIngvale has been offering to refund mattress-related purchases of $3,000 or more if the Astros win the World Series.