In it he praised their driver and golf ball, and thanked them for their help in getting some equipment for his brother.This memo was played to all of their salesmen, and eventually found its way back to Titleist.Mickelson was the second collegiate golfer to earn first-team All-American honors all four years. Mickelson secured perhaps his greatest achievement as an amateur in January 1991, winning his first PGA Tour event, the Northern Telecom Open, in Tucson.
After winning two majors in a row heading into the U. Open at Winged Foot, Mickelson was bidding to join Ben Hogan and Tiger Woods as the only players to win three consecutive majors (not necessarily in the same calendar year).
Mickelson was the joint-leader going into the final round, but he was part of a wild finish to the tournament, in which he made major mistakes on the final hole and ended up in a tie for second place at 6 (286), one shot behind Geoff Ogilvy.
After the win, Mickelson said, "I didn't want to be the bad guy. I was just trying to win the golf tournament." Although he had performed very well in the majors up to the end of the 2003 season (17 top-ten finishes, and six second- or third-place finishes between 19), Mickelson's inability to win any of them lead to him frequently being described as the "best player never to win a major".
Mickelson's first major championship win came in his thirteenth year on the PGA Tour in 2004, when he secured victory in the Masters with an 18-foot (5.5 m) birdie putt on the final hole.
Mickelson also led the Sun Devils to the NCAA team title in 1990.
Over the course of his collegiate career, he won 16 tournaments.On the 18th hole, Mickelson hit one of his trademark soft pitches from deep greenside rough to within a 18 inches (460 mm) of the cup, and made his birdie to finish at a 4-under-par total of 276, one shot ahead of Steve Elkington and Thomas Bjørn.Mickelson captured his third major title the following spring at the Masters.Mickelson attended Arizona State University in Tempe on a golf scholarship and became the face of amateur golf in the United States, capturing three NCAA individual championships and three Haskins Awards (1990, 1991, 1992) as the outstanding collegiate golfer.With three individual NCAA championships, he shares the record for most individual NCAA championships alongside Ben Crenshaw.Mickelson graduated from ASU in June 1992 and quickly turned professional.He bypassed the tour's qualifying process (Q-School) because of his 1991 win in Tucson, which earned him a two-year exemption.Other players to accomplish this feat include Doug Sanders (1956 Canadian Open) and Gene Littler (1954 San Diego Open).To date, it is the most recent win by an amateur at a PGA Tour event.Mickelson began golf under his father's instruction before starting school.Phil Sr.'s work schedule as a commercial pilot allowed them to play together several times a week and young Phil honed his creative short game on an extensive practice area in their San Diego backyard.