In the 1920s and 30s, people got the news from newspapers. Favorable reviews of movies (or songs in movies) helped to create film stars. Great write-ups about athletes helped to create sport stars. Damon Runyon was one of those star-creating newspaper writers.
A celebrity himself, who earned enormous sums for his columns and news reports, Runyon’s favorable comments about a good song (“Thanks for the Memory”) in a poorly reviewed movie (The Big Broadcast of 1938) helped to launch Bob Hope as a household name in the movie business. Runyon’s comments about boxers - at the time the most popular athletes in the world - resonated with a public enduring the disastrous years of the Great Depression.
It was boxing which got Jim Braddock noticed. It was Damon Runyon who first called Braddock the “Cinderella Man.”