Born in Modesto, California, to John Howard Aldrich DeChambeau and Janet Louise Druffel, DeChambeau moved to Clovis, east of Fresno, at age seven. He attended Clovis East High School and won the California State Junior Championship at age 16 in 2010. DeChambeau graduated in 2012 and accepted a scholarship to Southern Methodist University in Dallas, Texas, majoring in physics.
World Golf Championships-HSBC Champions: Came to the 72nd hole in need of a birdie to get into a playoff with Tim Clark and Bubba Watson at the World Golf Championships-HSBC Champions. Hit a 5-wood from the fairway that came up short and went in the water on the par-5. Made par after taking a penalty and finished T3 after a final-round 70 at Sheshan International GC in Shanghai.
Lowry missed the first three cuts of his professional career, but had his first payday on 5 July, when he finished 50th at the Open de France ALSTOM. He had his best professional result in November 2009, when he finished 3rd in the Dunlop Phoenix Tournament in Japan. In January 2010, Lowry finished in fourth place in the Abu Dhabi Golf Championship, moving him into the top-100 of the Official World Golf Ranking.
After a tie for fifth at the Masters in April, Fowler had his best finish of 2014 at the U.S. Open at Pinehurst No. 2 in North Carolina. Fowler was runner-up with Erik Compton at −1, best finishes for both at a major, but they were eight strokes behind champion Martin Kaymer. Fowler had another second-place finish, at the Open Championship at Royal Liverpool Golf Club in Hoylake, England. He began the final round six strokes behind Rory McIlroy and finished the day tied for second with Sergio García at −15, two strokes behind McIlroy. At the next major in August, the PGA Championship, Fowler, Phil Mickelson, Henrik Stenson, and McIlroy battled for the title on a rain-soaked Valhalla Golf Club, near Louisville. Despite holding the lead for a good portion of the day, Fowler tied for third. He was only the third player, along with Jack Nicklaus and Tiger Woods, to have finished in the top 5 in all four majors in one calendar year, but the first not to win (Jordan Spieth became the fourth player in 2015). Fowler had 10 top-10 finishes during the 2013–14 season. His 8th-place finish at The Tour Championship moved him to 10th in the world golf rankings.
In June 2015, he became the first SMU Mustang to win the NCAA individual championship, recording a score of 280 (−8) to win by one stroke. In August, he won the U.S. Amateur title, defeating Derek Bard 7 & 6 in the 36-hole final. He became the fifth player to win both the NCAA and U.S. Amateur titles in the same year, joining Jack Nicklaus (1961), Phil Mickelson (1990), Tiger Woods (1996), and Ryan Moore (2004).
On 28 January 2010, Lowry agreed a deal which would take him on a loan to Leeds United until 13 March 2010, joining his fellow Australian international teammates Patrick Kisnorbo and Neil Kilkenny. He made his debut for Leeds against Colchester United, playing left back for Leeds. After an impressive debut, Lowry suffered a minor injury and had to be substituted and replaced by Bradley Johnson after 70 minutes. After missing the FA Cup replay against Tottenham Hotspur due to not being eligible, Lowry returned to the Leeds starting lineup in the following game against Hartlepool United.
In 2008, Fowler repeated as Sunnehanna Amateur champion. In the first round of the U.S. Open, Fowler shot a −1 (70) and was in a tie for 7th place. He was one of three amateurs to make the cut, along with Derek Fathauer and Michael Thompson. He ended the tournament tied for 60th. In October 2008 Fowler played on the Eisenhower Trophy team that finished second. He was the leading individual player.
The Barclays: Held a one-stroke lead over Patrick Reed after 54 holes at The Barclays in the FedExCup Playoffs, before a double bogey-birdie-bogey finish on Nos. 16-18 resulted in a T7 at 6-under 278 with Jason Kokrak and Ryan Moore. Fowler went bogey free at Bethpage Black from the 10th hole in round one until the 11th hole in the final round, a span of 55 holes. His 55-consecutive holes without a bogey became a personal best on the PGA TOUR, besting 53 from the 2010 Memorial Tournament. This streak also marked the longest recorded in Barclays history since hole information began in 1983. Ian Poulter had the longest with 45 in 2010. The finish marked his third top-10 showing in his last four starts in the event (T9/2013, T9/2014).