Masters: Sweden's Peter Hanson takes Masters lead when Lee Westwood stumbles AUGUSTA, Ga. - After some major moves early this afternoon, the second-round Masters leaderboard has stabilized. Americans Jason Dufner and Fred Couples are in the lead at 5-under. That's about all they have in common. Dufner, an under-the-radar type, hasn't won since the 2006 LaSalle Bank Open. That's a Nationwide Tour event that was played at the Glen Club outside Chicago. "I'm just trying to have a nice round of golf, play well, commit to my shots and let the rest take care of itself," Dufner said. Couples won here in 1992 and remains a heartthrob at age 52. "I feel like I'm very young when I get here," he said. Couples called his 5-under 67, the day's low round thus far, "very shocking." Almost as shocking as Lee Westwood making a double-bogey on No. 18 to fall from the lead at 6-under to a tie for second at 4-under. Sergio Garcia, Rory McIlroy and Bubba Watson are also all at 4-under. Tiger Woods is 2-over for the round through 12 holes - and 2-over for the tournament. Phil Mickelson shot a 4-under 68 to get back in contention, at 2-under. Read Jeff Shain's blog, The Downswing, at OrlandoSentinel.com/golfblog. tgreenstein@tribune.com