6. Frank Rosenthal Revolutionized Sports Betting

Frank Rosenthal wasn’t just a casino manager—he was a true innovator. By launching the first in-casino sportsbook, he transformed how Vegas operated and legitimized sports betting as a mainstream attraction. Rosenthal’s vision laid the groundwork for the thriving, regulated sports betting industry that exists in the U.S. today. Discover Rosenthal’s impact at ESPN.



