Kang Sung-hoon (; born 4 June 1987), also known as Sung Kang, is a South Korean professional golfer who plays on the PGA Tour. He won the 2019 AT&T Byron Nelson, his first win on the PGA Tour. Amateur career In April 2006 Kang won the SBS Lotte Skyhill Open, the opening event of the Korean Tour season. Later in the month he played in the 2006 Bonallack Trophy in New Zealand, representing Asia/Pacific against Europe. In October he represented South Korea in the 2006 Eisenhower Trophy in South Africa. The team finished 5th while Kang had the 6th best individual score. He was also the gold medalist at the 2006 Asian Games, which exempted him from mandatory military service. Professional career Kang turned professional in 2007 and joined the Korean Tour. He first gained international prominence in 2009 when he lost in a playoff for the Ballantine's Championship, a tournament co-sanctioned by the Korean Tour, the European Tour and the Asian Tour. In 2010 Kang won for his first Korean Tour event as a professional at the Eugene Securities Open, and ended the season by finished tied for 16th place in the PGA Tour qualifying school to gain a place on the tour for 2011. In May 2011, Kang lost a playoff for the BMW Charity Pro-Am on the Nationwide Tour. The following month, he qualified for the U. S. Open, his first major, and finished in a tie for 39th. Kang retained his PGA Tour card for 2012, helped by finishing tied for third place at the Children's Miracle Network Classic, ending the season 120th on the money list. In October 2011 he was a runner-up in the Shinhan Donghae Open, a Korean Tour event, finishing a stroke behind Paul Casey. 2012 was a much less successful season and he failed to retain his place on the tour. Kang played on the Web.com Tour from 2013 to 2015. In October 2013 he won two tournaments in Korea in successive weeks, the CJ Invitational and the Kolon Korea Open. He did not win on the Web.com Tour but was runner-up in the Utah Championship in both 2014 and 2015, losing in a playoff in 2015 to Patton Kizzire. He finished 2015 in 22nd place in the Web.com Tour regular season standings to earn a return to the PGA Tour for 2016. Since 2016 Kang has played on the PGA