Simpson has five wins on the PGA Tour, first winning the 2011 Wyndham Championship. He later won the 2012 U.S. Open, beating Graeme McDowell and Michael Thompson by one shot. Simpson has had a strong 2017-18 season. He won The Players Championship by four strokes, his first PGA Tour win since 2013. Simpson also has six top-10 finishes this season. He tied for 10th at the U.S. Open, tied for 12th at The Open Championship and was T19 in the PGA Championship.