The course is playing longer, the greens speeding up.

"It's unbelievable how much faster they were this morning,” said Tiger Woods at three over. “They should slow up a little bit by this afternoon, but there's still quite a bit of moisture in them so I think that the uphill, into-the-grain putts are really slow and then obviously the downhill, down-grain putts are really quick."

Maybe it’s better not to putt at all. Amateur Gavin Hall avoided all that drama by holing out his second shot for an eagle on the par-five eighth hole.

Officials were hoping for a calm day but the weather could become a factor again, with forecasts calling for scattered thunderstorms in the late afternoon.


Phil Mickelson moves up while sleeping in | 7:13 a.m.

Phil Mickelson made a bold move up the U.S. Open leaderboard on Friday morning -- presumably from the comfort of his bed.

A stroke off the lead at Merion Golf Club as of Thursday night, Mickelson had the luxury of being able to sleep in because he wasn’t scheduled to tee off for the second round until 3:41 p.m. EDT.

But much of the field had to get up early to finish the first round, some makeup play required by Thursday’s weather delays.

The first-day leader, Luke Donald, struggled with Merion’s tough final stretch, dropping two strokes and settling into second place at two-under. Mickelson is at three-under.

Apparently, with no rain overnight, the greens had gotten faster.

"There was a complete switch in wind and obviously a big drop in temperature,” Donald said. “So those holes are playing long."

The morning session was equally tough on Adam Scott, who slipped from two under to two over, playing in the marquee group with Tiger Woods and Rory McIlroy, both of whom finished at three over. Woods mused about several missed putts.

“Round could easily have been under par,” he said.

The world’s top-ranked golfer also talked -- albeit briefly -- about the obvious pain in his left arm, which caused him to wince as he hit out of the rough on several occasions Thursday.

“It is what it is,” he said. “You move on.”

With the first round finally drawing to a close, only five players stood under par at Merion. Mathew Goggin was at two under with Donald, while Nicolas Colsaerts and Russell Knox were at one under.

“One, it’s colder,” defending champion Webb Simpson said. “And, two, the wind is blowing a different direction.”

The second round was scheduled to begin around 9:45 EDT.