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 took a share of the lead at the Korea Open by shooting a 2-under 69 Friday in the second round.

McIlroy, who finished third in the event two years ago, is tied for lead 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 others 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.