Sung Kang matches course with 61 to take Byron Nelson lead

   DALLAS (AP) -- Sung Kang matched the Trinity Forest course record with a 10-under 61 on an unseasonably cool day Friday to take the second-round lead in the Byron Nelson.

   Kang was 16 under after his round that included six birdies in a row. The 31-year-old South Korean who lives in North Texas had a four-stroke lead over playing partner Matt Every and Tyler Duncan.

   Marc Leishman shot a 61 last year in the first Nelson round played at the links-style course near downtown Dallas.

   With temperatures in the low 50s, Kang began his day with a 9-foot birdie on the par-5 No. 1 hole. His approach to within a foot of the cup at the 311-yard No. 5 set up the first of his six straight birdies.

   Every had his second straight 65, and Duncan shot 66. Brooks Koepka, the world's No. 3-ranked player who goes to next week's PGA Championship as defending champion, was fourth at 11 under after a 66.

   Jordan Spieth shot 67 to get to 7 under. Former Dallas Cowboys quarterback Tony Romo, also a member of the club, was 8 over after a 74. He missed the cut, but didn't finish last.