AUGUSTA, Ga. (Reuters) - Dustin Johnson grabbed a share of the Masters clubhouse lead on Friday before second-round play was suspended due to darkness with defending champion Tiger Woods still on the course and early favourite Bryson DeChambeau at risk of missing the cut.Johnson, who finished the darkness-interrupted first round in a three-way share of the lead early on Friday, had a short break and then returned a two-under-par 70 to reach nine under for the week on another low-scoring day at Augusta National. That left Johnson, who is looking to become the first world number one to triumph at Augusta National since Woods in 2002, level with Justin Thomas (69), Australian Cameron Smith (68) and Masters debutant Abraham Ancer of Mexico (67). “I feel like I played a little bit better than my position right now,” said Johnson. “But you know, I’m still happy with the way I’m swinging it, how I’m controlling the golf ball and everything I’m doing.” The 2016 U.S. Open champion began his round on the back nine and quickly pulled away with three consecutive birdies through Amen Corner for a three-shot cushion but then made his first bogeys of the week on the next two holes.