Atwal, Henry atop leaderboard at Zurich Classic

— -- NEW ORLEANS - Chris DiMarco got back on track to move back on top. The Masters' runner-up used four birdies over his initial 10 holes of the rain-delayed third round Saturday to charge to the top of the leaderboard at the $5.5 million Zurich Classic of New Orleans. After rain held up the start of play roughly five hours, darkness halted action just before 8:30 p.m. EDT - with only 15 golfers finishing the third round. DiMarco got through just 10 holes but birdied four of them to move 12-under-par. DiMarco is one shot ahead of James Driscoll, who completed 11 holes. Second-round leader Arjun Atwal of India is another shot further back, having also gotten through 10 holes. "I'm glad we got through 10 holes today," the 36-year-old DiMarco said. "That saves my legs for tomorrow, so 26 holes is fine." Of the 18 PGA tournaments this year, 10 have experienced some type of weather delay. With 69 golfers needing to complete their third rounds, play will resume early Sunday morning. Threesomes will be used Sunday and there is a possibility that golfers will not be re-paired for the fourth round. "Right now we're just kind of going to wait and see as to how long it takes to finish up what we have to play in the morning and look at what we have left as where they can tee off to start the fourth round," PGA advanced rules official Tony Wallin said. DiMarco is playing for the first time since enduring a heart-wrenching playoff loss to world No. 1 Tiger Woods at the Masters. Off for the last two weeks, he is seeking his first win since the 2002 Phoenix Open. Despite the title drought, DiMarco gets the job done. He is ninth on the money list with just over $1.5 million and has finished in the top 20 in earnings in each of the past five years. In addition to his runner-up showing at the Masters, DiMarco also finished second at the WGC-Accenture Match Play Championships. "(Winning) is the goal every week, obviously it's not going to change," DiMarco said. "I feel like I am hitting it as good as I have in a really long time. My short game is very good. ... There are a lot of great players behind me and you know, anything can happen." Driscoll, 27, is a tour rookie who never has finished higher than 16th. He had a bogey-free round Saturday, recording six birdies, including four over his final five holes. "Everything has been falling into place," Driscoll said. "Everyone in contention is obviously playing well, so I don't feel like all my momentum is gone (because of the weather stoppage). Hopefully my surge today will help me a lot." Atwal was in the lead and 1-under for the day when his round came apart at the par-5 seventh, where a swing and miss and three-putt led to a double-bogey. "I hit the tree on the way down and missed the ball," said Atwal, who has a second-place finish this year but never has won a PGA event. "Air shot. That kind of shook me up a little bit, and I three-putted on the green. It was a bad time and a bad situation." The TPC of Louisiana, which absorbed more than 1.4 inches of rain, is a par-72, 7,520-yard layout. First prize is $990,000.