Jason Day is an Australian professional golfer and PGA Tour member. Day first broke into the world's top ten in June 2011, rising to world number nine after his runner-up finish at the U.S. Open. In February 2014, Day won his first WGC title, the WGC-Accenture Match Play Championship. He went on to win his first major tournament at the 2015 PGA Championship, scoring a record 20 strokes under par and rising to number three in the world rankings.