Jordan Spieth continued his impressive resurgence on the PGA Tour as he moved into the 36-hole lead at the AT&T Pebble Beach Pro-Am.
Spieth carded an impressive 5-under 67 at Spyglass Hill on day two to move to 12-under par and one stroke clear of compatriot Daniel Berger, who came home in 31 shots on the opening nine holes for a round of 66 at a windier Pebble Beach.
Three-time major champion Spieth, who finished tied fourth at the Phoenix Open last week, birdied four his final six holes to take outright possession of the lead.
Spieth has not won a tournament on the PGA Tour since lifting the Claret Jug at the 2017 Open at Royal Birkdale.
Sweden's Henrik Norlander moved into solo third on 10-under par after a round of 70 at Spyglass Hill.
Pre-tournament favourite Patrick Cantlay, who opened with a joint course record 10-under 62 at Pebble Beach on Thursday, failed to fire on day two at Spyglass Hill with a disappointing 1-over 73 to fall back to 9-under par for the tournament alongside English duo Tom Lewis and in-form Paul Casey.
Further down the board, Jason Day carded a 69 to move to 6-under par.
Rickie Fowler's miserable run of form continued as he posted a 3-over 75 at Spyglass Hill to miss the cut by several shots.
Phil Mickelson carded a disastrous 80 after sending two shots into the water on the par-5 18th to finish his week on 10-over par.
All players making the halfway cut will now play the final two rounds on the weekend at Pebble Beach.