Who was the prominent PGA figure that won his first major in 1963?

The prominent PGA figure who won his first major in 1963 is Jack Nicklaus. He secured his initial major victory at the U.S. Open that year, which is a significant milestone in his illustrious career. This achievement marked the beginning of Nicklaus's rise to prominence in professional golf, leading him to become one of the greatest golfers of all time. His ability to perform under pressure and compete against other greats of the era helped solidify his status in the sport. In contrast, Arnold Palmer, Ben Hogan, and Sam Snead were already established champions by 1963, with each having multiple major titles to their names prior to that year.