Phil Mickelson
Mickelson has finished second in the U.S. Open six times - 1999, 2002, 2004, 2006, 2009, and 2013.
Mickelson turned professional immediately after graduating from ASU in June 1992. His first PGA Tour win as a professional came in February of 1993 at the Buick Invitational, an event he won by four strokes. He would win 20 more Tour events before finally capturing his first major, the 2004 Masters Tournament. He secured that victory with an 18-foot birdie putt on the final hole.