Quail Hollow Championship, Round 2

NEW LEADER (11:35 a.m.): The birdie train rolls on for Zach Johnson, who is challenging the course record right now with seven birdies and no bogeys in a round of 7 under with four holes to play.

That moves Johnson to 9 under for the tournament and two ahead of overnight leader Tiger Woods, who will tee off in just over an hour from now.

One other player who's made a significant move: Jason Dufner, who is 3 under on the day and one back of Johnson's lead. Dufner's been playing well this season and has put in a ton of time in the fitness trailer and it's paid off with two top 10s, including one last week in New Orleans. -- Brian Wacker

MICKELSON DROPS BACK (11:00 a.m.): Phil Mickelson got off to a nice start this morning with two straight birdies on the back nine here, but has since given those strokes back and thensome.

On the par-3 17th, Mickelson four-putted from 42 feet to make double bogey and four holes later made another bogey when he struggled to get out of the rough after hitting it into a tough spot left of the fairway.

As a result, Mickelson, who began the day just two back of Tiger Woods and who many figured would make a run at the lead given his early tee time, is 1 over on the round, 4 over for the week and now three back of the lead. -- Brian Wacker

EARLY MOVERS (10:45 a.m.): Tiger Woods doesn't tee off for another couple of hours, but a few players are doing what he did yesterday and taking advantage of an early tee time. Chief among them is Zach Johnson, who is 5 under through his first 11 holes and is now tied for the lead.

Johnson stuffed his approach shots on Nos. 8, 9, 10 and 11, making birdie on all four holes. That Johnson is on a pretty hot streak right now isn't all that surprising -- he won in Hawaii earlier this year and was T3 in Orlando. That he's playing this well here is a little bit of a surprise.

The Quail Hollow Championship has only been in existence since 2003, but Johnson has never played particularly well in the event with only one finish inside the top 80, a T25 last year. In 2005, Johnson missed the cut by shooting back-to-back 80s. link...