PEBBLE BEACH, Calif. — Dustin Johnson already was feeling good about his game heading over to the Shore Course at Monterey Peninsula. Another day of gorgeous weather in the AT&T Pebble Beach Pro-Am made him feel even better.

Johnson ran off three straight birdies to start his round, made four in a five-hole stretch around the turn and wound up with a 7-under 64 on Friday to share the 36-hole lead with Beau Hossler.

“Probably my lowest by about seven shots at Monterey Peninsula, so I was happy with that,” Johnson said. “It’s probably the first time, too, I think we have ever played over there with nice weather.”

He only slightly exaggerated, but not by much. In four times playing at Monterey Peninsula since it joined the rotation, he only broke 70 one time and twice shot 73. The evidence of the different day he faced came early. Johnson hit a 9-iron on the 176-yard hole that plays downhill. A year ago, he hit 4-iron. On the 434-yard 13th hole a year ago, he “roasted” a driver and a 3-iron. This year, he hit 3-wood and had 85 yards left.

Hossler, the PGA Tour rookie best known in these parts for contending on the weekend at Olympic Club in 2012 U.S. Open when he was 17, was flawless at Spyglass Hill in a round of 67 to join Johnson at 12-under par.

Hossler has not made a bogey this week. He holed an 18-foot par putt on the 10th hole at Pebble on Thursday. For his second round, he never came close to bogey.

Hossler heads over to Monterey Peninsula, while Johnson spends his last two days at Pebble Beach.

They were two shots ahead to par on Julian Suri (67 at Monterey Peninsula) and Troy Merritt (67 at Spyglass Hill).

Lurking another shot behind were Phil Mickelson and Jon Rahm.

Mickelson hasn’t won since the British Open in 2013 at Muirfield, and he finally started to see some reasonable results after a sluggish start. Mickelson was tied for the lead at one point when he ran off three straight birdies at Monterey, though he made only two more for a 65.

Rahm was at Pebble Beach and holed his share of 6-footers for birdie for a 67. Just as big was the 8-foot putt he made on the 18th hole for par when he hit 3-wood to the right behind a tree, pitched nicely under the limbs and over the bunker just through the green, and then his chip ran downhill by the hole.

Jason Day had a 65 at Monterey Peninsula and was in the group at 9 under that included Steve Stricker (66 at Monterey Peninsula).

Jordan Spieth found some touch with the putter to make five birdies on his opening nine holes at Monterey Peninsula, and he wound up with a 66, though he remained seven shots behind Johnson.

“I saw a couple putts go in early and normally that’s all I need to kind of stop skiing uphill and start to turn downhill,” Spieth said.

Rory McIlroy went downhill.

He was hanging round at 5 under, not far from the lead, when he drove to the front of the par-4 fifth hole at Monterey Peninsula, leaving him a 70-foot eagle putt. He ran that about 6 feet past the hole, and then missed his birdie putt. But then he missed his par putt from 3 feet, and it ran about 6 feet by the hole, and he missed that one. That’s five putts for a double bogey.

PGA TOUR CHAMPIONS: Mark Calcavecchia shot an 8-under 64 to take the first-round lead in the Boca Raton Championship in Florida.

Calcavecchia, 57, birdied seven of his first 10 holes and added another on the par-4 seventh at The Old Course at Broken Sound.

Rocco Mediate and Jeff Maggert were a stroke back.

WORLD SUPER 6: Lee Westwood was tied for the lead with defending champion Brett Rumford after two rounds at Lake Karrinyup Country Club in Perth, Australia.

The top 24 after three rounds play six-hole shootouts in the event co-sanctioned by three tours: European, Asian and PGA of Australia.