 On June 23, 2013, in his 187th start and after three runner-up finishes in his career, Duke broke through to win his first event on the PGA Tour at the Travelers Championship.He beat Chris Stroud with a birdie on the second extra hole of a sudden-death playoff.He entered the final round two shots back of the leaders, but shot a final round 66 to take the lead in the clubhouse before Stroud chipped in on the final green to force a playoff.