Paul Casey fired a seven-under par 64 to take a share of the lead before play was suspended on day two of the AT&T Pebble Beach Pro-Am in California.
Playing on the Monterey Peninsula course, Casey got to 10 under and joined five-time major champion Phil Mickelson, Lucas Glover, and first-round leader Scott Langley at the top of the leaderboard.
The Englishman produced a blemish-free round, picking up five birdies and an eagle on the par-five 16th, after a first-round 69 at Pebble Beach.
Mickelson, starting on the back nine at Spyglass Hill, shot a 68 and closed out with a birdie on the par-four ninth after a run of three bogeys.
Former world number one and three-time major winner Jordan Spieth also sits at 10 under but was forced off the Spyglass Hill course after 16 holes due to rain.
Jason Day and Scott Piercy in sixth and seventh place respectively will also finish their second rounds on Saturday morning, as well as Englishman Tommy Fleetwood.
Shane Lowry meanwhile is way off the pace, after he shot a second round of 75 around Pebble Beach, to leave him on four over par for the tournament.
Brian Gay, who shared the lead with Langley after day one, dropped into a share for eighth after a level-par 72 at Spyglass Hill.
Graeme McDowell, playing on Monterey, carded a second-round 70 to move to five under alongside Scotsman Russell Knox.
The tournament is played over three courses — Monterey, Pebble Beach and Spyglass Hill — before the final round at Pebble Beach on Sunday.
Collated second round scores & totals in the USPGA Tour AT&T Pebble Beach Pro-Arm, Pebble Beach GC, Pebble Beach, Monterey, California, United States of America (USA unless stated):
Scores from Pebble Beach Golf Links (Par 72):
134 Lucas Glover 68 66
137 Scott Stallings 67 70, Rafael Cabrera-Bello (Spa) 69 68
138 Fabian Gomez (Arg) 67 71
139 Vaughn Taylor 70 69, Cody Gribble 66 73
140 Jim Furyk 72 68, Sang-moon Bae (Kor) 69 71, Cameron Davis (Aus) 72 68, Johnson Wagner 67 73
141 Whee Kim (Kor) 74 67, Michael Kim 72 69
142 Matt Jones (Aus) 71 71, Adam Hadwin (Can) 72 70
Jose de Jesus Rodriguez (Mex) 68 74, Cameron Champ 73 69, Wyndham Clark 73 69, Aaron Baddeley (Aus) 69 73, Michael Thompson 70 72, Adam Long 73 69, Martin Laird (Sco) 68 74
144 J.J. Henry 70 74, John Senden (Aus) 72 72
145 Andrew Putnam 75 70, Ryan Palmer 70 75, James Hahn 71 74, David Duval 73 72, Kelly Kraft 72 73
146 Peter Malnati 72 74, Hunter Mahan 71 75, Adam Svensson (Can) 73 73, Jimmy Walker 75 71, Tyrone Van Aswegen (Rsa) 73 73, J.J. Spaun 74 72
147 Anders Albertson 72 75
148 Shane Lowry (Irl) 71 77, Martin Piller 72 76, Chase Wright 74 74, Corey Conners (Can) 75 73
149 Grayson Murray 70 79, Sepp Straka (Aut) 72 77, Rod Pampling (Aus) 72 77
150 Kramer Hickok 77 73, Ben Crane 70 80, John Catlin 77 73
152 Roger Sloan (Can) 77 75
153 Jim Knous 74 79, Jason Schmuhl 73 80
154 Chesson Hadley 76 78
156 Ted Potter, Jr. 82 74, Brice Garnett 77 79
Scores from Monterey Peninsula (Par 71):
133 Paul Casey (Eng) 69 64
135 Scott Piercy 70 65
136 Branden Grace (Rsa) 67 69
137 Si Woo Kim (Kor) 66 71
138 Graeme McDowell (NIrl) 68 70, Roberto Diaz (Mex) 69 69, Sung Kang (Kor) 69 69, Roberto Castro 68 70, Nate Lashley 67 71, Jonathan Byrd 69 69
139 Brian Stuard 69 70, Sam Saunders 69 70, Tyler Duncan 71 68, Nick Taylor (Can) 69 70, Cameron Tringale 71 68
140 Chris Stroud 69 71, Hank Lebioda 71 69
141 Rory Sabbatini (Svk) 71 70, Chad Campbell 69 72, Benjamin Silverman (Can) 70 71, Matthew Fitzpatrick (Eng) 71 70, Tom Hoge 71 70, Alex Prugh 69 72
142 Tony Finau 69 73, Richy Werenski 72 70, John Rollins 73 69, Scott Brown 72 70, Tom Lovelady 72 70, Max Homa 73 69, Martin Trainer 69 73, Brandon Harkins 69 73
143 Julian Etulain (Arg) 71 72, Chad Collins 73 70, Brandt Snedeker 69 74
144 Stephan Jaeger (Ger) 74 70, Joey Garber 71 73, Sebastian Munoz (Col) 72 72
145 Derek Fathauer 75 70, David Lingmerth (Swe) 75 70, Kyoung-hoon Lee (Kor) 72 73, Dylan Frittelli (Rsa) 73 72
146 Freddie Jacobson (Swe) 74 72
147 Nick Watney 73 74, J.B. Holmes 76 71, Chris Thompson 73 74, Kyle Jones 74 73
148 Broc Everett 74 74, John Huh 72 76
149 Alex Cejka (Ger) 76 73
151 Robert Garrigus 81 70
155 John Chin 78 77
159 Steve Jones 76 83
Scores from Spyglass Hill (Par 72):
133 Phil Mickelson 65 68, Scott Langley 64 69
134 Jason Day (Aus) 65 69, Jordan Spieth 66 68
136 Brian Gay 64 72, Matt Every 65 71, Kevin Kisner 65 71, Jonas Blixt (Swe) 67 69
137 Talor Gooch 68 69, Ernie Els (Rsa) 69 68, Curtis Luck (Aus) 70 67, Mackenzie Hughes (Can) 68 69
138 Kenny Perry 67 71, Beau Hossler 69 69, Russell Knox (Sco) 68 70, Chez Reavie 68 70, Patrick Reed 68 70
139 Dustin Johnson 66 73, Ricky Barnes 70 69, Trey Mullinax 71 68, Russell Henley 71 68, Brady Schnell 67 72
140 Wes Roach 67 73, Austin Cook 66 74, Matt Kuchar 67 73, Keith Mitchell 66 74, D.J. Trahan 68 72, Josh Teater 70 70, Kevin Streelman 70 70
141 Charley Hoffman 69 72, Tommy Fleetwood (Eng) 73 68, Seth Reeves 67 74
142 Adam Schenk 70 72, Adam Scott (Aus) 70 72, Brendon Todd 69 73, Ryan Ruffels (Aus) 71 71
143 Steve Stricker 68 75, Doug Ghim 68 75
144 Parker McLachlin 69 75
145 Jerry Kelly 71 74, Brian Davis (Eng) 71 74, Pat Perez 69 76, Davis Love III 71 74, Ryan Armour 70 75, Dominic Bozzelli 72 73, Jason Gore 73 72
146 D.A. Points 75 71, Dru Love 74 72
147 Ho-sung Choi (Kor) 72 75, David Hearn (Can) 73 74
148 Sungjae Im (Kor) 71 77
150 Patrick Rodgers 72 78
