William Earl Casper Jr. was an American professional golfer. He was one of the most prolific tournament winners on the PGA Tour from the mid-1950s to the mid-1970s.

The PGA Tour is the organizer of professional golf tours in the United States and North America. It organizes most of the events on the flagship annual series of tournaments also known as the PGA Tour, as well as the PGA Tour Champions and the Korn Ferry Tour, as well as the PGA Tour Canada, PGA Tour Latinoamérica, and formerly the PGA Tour China. The PGA Tour is a nonprofit organization headquartered in Ponte Vedra Beach, Florida, a suburb southeast of Jacksonville.