Arnold Daniel Palmer (September 10, 1929 – September 25, 2016) was an American professional golfer who is generally regarded as one of the greatest and most charismatic players in the sport's history. Dating back to 1955, he won numerous events on both the PGA Tour and the circuit now known as PGA Tour Champions. Nicknamed The King, he was one of golf's most popular stars and seen as a trailblazer, the first superstar of the sport's television age, which began in the 1950s.
Palmer's social impact on behalf of golf was perhaps unrivaled among fellow professionals; his humble background and plain-spoken popularity helped change the perception of golf from an elite, upper-class pastime (private clubs) to a more populist sport accessible to middle and working classes (public courses). Palmer, Jack Nicklaus, and Gary Player were "The Big Three" in golf during the 1960s; they are widely credited with popularizing and commercializing the sport around the world.