Philip Alfred Mickelson was born on June 16, 1970, in San Diego, California. Mickelson's career in golf began around the time he could walk. His parents, Phil and Mary, tell the story of a young Phil running away from home at the age of 3, telling neighbors he was going to the golf course.
Phil Mickelson began an amateur golfing career as a teen. He won 34 San Diego Junior Golf Association titles, using his father's job as an airline pilot to score tickets to his various tournaments. His mother took a second job to help pay for his American Junior Golf Association play, which won him three consecutive AJGA Rolex Player of the Year awards, and a full scholarship to Arizona State University.