Martin Laird carded a five-under 66 to take a two-stroke lead at the Phoenix Open as Tiger Woods sunk to a new low by posting a career-worst second-round 82.
Laird soared to the top of the leaderboard, leapfrogging overnight leader Ryan Palmer, thanks to yet another round of 66 that saw him move to 10 under through his 36 holes at TPC Scottsdale on Friday.
The Scot was blemish free on the front nine, sinking birdies at the fourth and eighth holes.
Laird continued to putt well after the turn with a birdie at the 13th hole before adding another three in succession starting at the 15th.
Despite bogeying his final hole, Laird is two shots clear of American Daniel Berger " albeit 15 players were yet to finish their second rounds due to darkness.
Berger, who completed the final two holes of his first round early on Friday, registered a two-under 69 to be outright second in Scottsdale, Arizona.
Fellow American Justin Thomas is three shots off the pace following his 68.
Woods, meanwhile, missed the cut on the back of his worst-ever professional round.
The 14-time major winner struggled with his swing on Thursday " shooting a two-over 73 - but that was nothing compared to his second-round effort as he fell to dead last on the leaderboard at 11 over.
Woods' nightmare 82 consisted of a triple bogey, double bogeys and six bogeys.
The 39-year-old's previous worst-ever round was an 81 at the 2002 Open Championship.
Higher up the leaderboard, Bubba Watson is four shots behind Laird.
The two-time Masters champion had a 71 to improve to six under alongside countrymen Palmer (72), Ryan Moore (67), Zach Johnson (70), Robert Streb (70) and Argentinean Angel Cabrera (69).
Australian Geoff Ogilvy (69) is five under, alongside South Korean K.J. Choi (69) and Canadian Graham DeLaet (70).
Of the players yet to finish their rounds, Pat Perez, William McGirt and Brooks Koepka are the best-placed at three under.