After placing a losing win bet of more than $2 million on Essential Quality (Tapit) in last year's GI Kentucky Derby, Jim "Mattress Mack" is coming back for more. McIngvale said that he is planning to bet between $3 million and $4 million this year on the race favorite. McIngvale has often linked huge bets on sporting events such as the World Series, the NCAA tournament, the Super Bowl and the Derby to promotions at his Gallery Furniture stores in Houston. If the favorite wins the Derby, McIngvale will issue...