IRVING, TEXAS | No one ever said winning for the first time on the PGA Tour was easy. Sang-Moon Bae can vouch for that. After chasing Keegan Bradley since Thursday when the former PGA champion opened with a course-record 60, Bae ran him down on Sunday to win the Byron Nelson Championship by two strokes for his first PGA Tour victory. Bae did it on a windy Texas Sunday, building a four-stroke lead through eight holes in the final round then losing that lead before pulling away on the final three holes to beat Bradley at the TPC Four Seasons Resort, where Bradley won two years ago. “He’s a very, very good player,” said Bradley, who led after each of the first three rounds. Bae, 26, had 11 international victories but the closest he had come to winning on the PGA Tour came last year when he was part of a four-man playoff in the Transitions Championship won by Luke Donald. With winds gusting more than 20 mph most of the afternoon, Bae changed the storyline with four birdies in his first seven holes. Suddenly, Bradley found himself playing from behind and when the two players in the final pairing walked off the eighth green, Bae was four clear of the field. “The conditions were tough but I played really well the first eight holes,” Bae said. Just as quickly, the tournament flipped again when Bae dropped three shots to par at the ninth and 10th holes, bringing Bradley and Charl Schwartzel back into the chase. When Bradley made a birdie at the par-4 15th hole after ripping a 5-iron approach shot through the wind, he was tied again with Bae, who made a bogey there.