Frank Rosenthal

Frank Lawrence "Lefty" Rosenthal (June 12, 1929 – October 13, 2008) was an American professional sports bettor and casino executive who managed several Las Vegas properties in the 1970s, including the Stardust Resort & Casino, where he implemented operational innovations such as computerized slot monitoring and expanded sports wagering that boosted revenues for mob-affiliated interests. Born in Chicago to a Jewish family, Rosenthal earned his nickname from reputed left-handed proficiency and developed expertise in handicapping odds during his youth, later associating with the Chicago Outfit to oversee skimming operations that diverted untaxed casino profits to organized crime figures.

Rosenthal's tenure in Las Vegas, beginning around 1968, involved proxy control through legitimate fronts like Allen Glick's companies, where he directed daily operations across multiple casinos despite lacking a Nevada gaming license due to his criminal background. His innovations, including the introduction of high-limit sports books and efficient management systems, generated millions in profits but drew federal scrutiny, culminating in convictions for racketeering-related activities and his 1988 placement on the Nevada Gaming Commission's Black Book of excluded figures.

Frank Lawrence Rosenthal was born on June 12, 1929, in Chicago, Illinois, to a Jewish family on the city's West Side. His father, a produce wholesaler, shared a keen interest in wagering, which influenced Rosenthal's early exposure to gambling concepts. From grade school onward, Rosenthal demonstrated a natural aptitude for mathematics, placing parlay card bets and calculating odds informally.