Rory McIlroy 4 off the lead at the DP World Tour Championship

GolfRory McIlroy is four off the lead at the halfway mark of the DP World Tour Championship.

He carded a second successive round of 68 to sit on 8-under par, with England's Andy Sullivan leading the field on 12-under par.

McIlroy's closest rival in the Race to Dubai standings, Danny Willett, is on 6-under.

Shane Lowry's toward the other end of the leaderboard on 1-over after a 70.