Enjoyed a glittering amateur career, winning the U.S. Junior Amateur in 2003, the Players Amateur in 2005 and the Porter Cup in 2007. Represented the United States at the Walker Cup on two occasions, 2005 and 2009 and played in the 2007 Palmer Cup.

Won his first PGA TOUR title at the 2014 John Deere Classic and had to wait three years for his next victory at the Wells Fargo Championship in 2017. Held the 54-hole lead at the U.S. Open later that year, but finished four strokes behind Brooks Koepka at Erin Hills.

Tamed the elements at Royal Liverpool to win The 151st Open Championship in 2023 by six strokes. Carded a second-round 65 that beat the field average by more than eight strokes as he went on to take a five-shot lead into the final round. Became just the third left-hander to win The Open.