Australia's Adam Scott charged up the leaderboard at the Singapore Open Friday, getting himself within two shots of clubhouse leader Han Seung-su when the second round was suspended because of fading light. Already a three-time winner of the tournament, in 2005, 2006 and 2010, Scott put himself firmly in contention to win an unprecedented fourth title at the Sentosa Golf Club with a second round three-under-par 67 and a 36-hole total of seven-under 135. With two dozen players still to finish their second rounds because of a backlog from day one, Scott moved to outright second in the clubhouse, trailing only the Korean-born American Han, who followed up his 65 on Thursday with a 67. Angelo Que of the Philippines and Singapore's Quincy Quek were safely in the clubhouse, tied for third place at six-under, with a group of 10 players, including the defending champion Song Young-han of South Korea, level at five-under on a heavily congested leaderboard. Returning to the course early to finish off the last three holes of his opening round after play was interrupted Thursday because of a lightning storm, Scott rolled in two early birdies to sign for a 68, then was back on the tee soon after to start his second round. He hit 17 of the 18 greens in regulation and his putter, which had stalled his progress in the first round, started to co-operate, as he took just 32 strokes with the flat stick. One of three joint first-round leaders, Han continued his impressive start to the opening event on this year's Asian Tour, making six birdies. Sergio Garcia also made a late push in the afternoon, just missing an eagle on the last hole after a super approach shot. The Spaniard settled for a 68 to be at three-under. However, South Africa's Ernie Els had another frustrating day and was in danger of missing the cut. He carded a 71, his two-over total was not likely to secure him a place for the weekend. Bozzelli leads in California American Dominic Bozzelli, in only his sixth PGA Tour start, holed out from 113 yards to eagle the par-four 14th en route to a one-shot lead after Thursday's opening round of the CareerBuilder Challenge in La Quinta, California. Bozzelli upstaged high-profile names such as five-time major winner Phil Mickelson and 2011 champion Jhonattan Vegas as he fired an eight-under-par 64 on the Stadium Course, one of three venues hosting the pro-am event. The 25-year-old from New York state broke clear of a tightly-bunched leaderboard by sinking a 14-foot birdie putt on his final hole, the par-four ninth, to cap a bogey-free day in the California desert. Venezuelan Vegas and Americans Harold Varner III, Patton Kizzire and Hudson Swafford opened with 65s while fan favourite Mickelson, competing for the first time since recovering from a pair of offseason surgeries, carded a 68. Mickelson, who had surgeries for a sports hernia last October and December, was delighted to mark his return to competition with five birdies and a lone bogey, despite feeling a little rusty with his game. "I thought it was phenomenal," said the 46-year-old American. "I struck it horrible but I scored like out of my mind so I am very happy with it." - Agencies