Published: Oct 07, 2011 11:32 AM EDT
Updated: Oct 08, 2011 6:30 AM EDT

SEOUL, South Korea (AP) - U.S. Open champion Rory McIlroy shot a a 2-under 69 Friday to take a share of the lead after the second round at the Korea Open.

McIlroy, who finished third in the event two years ago, is tied with four others at 137 overall. Defending champion YE Yang (70), Rickie Fowler (70), Bronson La'Cassie (67) and Mo Joong-kyung (66) are also at 137 at the Woo Jeong Hills Country Club.

McIlroy had two birdies on the front nine, and then added two more on the 12th and 14th holes. But bogeys on Nos. 13, 15 and 16 took him back to 1 under for the day until a birdie on 18.