Patrick Cantlay, Graeme McDowell and Sam Saunders were level atop the leaderboard when the second round of the Genesis Open was suspended due to darkness, while Tiger Woods missed the cut.
Cantlay and McDowell completed their rounds to be one-shot clear on Friday, alongside Saunders, who was through 15 holes before play was halted at the Riviera Country Club, just like it was on Thursday.
Round two will resume at 07:15 local time in California on Saturday, with only 15 players unable to complete their second 18 holes.
Cantlay teed off tied for the lead alongside Tony Finau on Friday and the American managed to stay top, albeit with more company.
A two-under-par 69 consolidated Cantlay's position, while 2010 U.S. Open champion and Northern Irishman Graeme McDowell rose 16 positions thanks to a second-round 66.
Saunders also made it to seven under, though he still has three holes to play.
Ryan Moore (68) is outright fourth at six under, while overnight co-leader Finau posted a 71 to be a stroke further back.
Four-time major champion Rory McIlroy produced his best round of the tournament – a two-under-par 69.
The Northern Irish star, who opened with a 71, had five birdies to go with three bogeys in a mixed bag as he ended the day five shots off the pace – joined by Justin Thomas (71).
Former world number one and three-time major winner Jordan Spieth shot a 70 to be a shot behind McIlroy heading into Saturday's third round.
Spieth was fairly consistent with three birdies and two bogeys, though he was flawless on the front nine.
World number one Dustin Johnson bounced back from his forgettable opening round by posting a two-under-par 69.
After shooting a 74 on Thursday, Johnson climbed 53 places thanks to his almost bogey-free round which left the American star one over.
Woods, however, made an early exit from the event after recording a five-over-par 76.
Playing his second Tour tournament of the season having overcome back problems, 14-time major champion Woods holed eight bogeys in the second round as he said goodbye.
|Messi and Ronaldo reveal World Cup kits|
|Nara praises Inter project as Icardi talks continue|
|Best to lead Ireland in World Cup after signing extension|
|Marseille´s Rami wants to ´tickle´ PSG|
|Fury targeting Louis´ record for title defences|
|Salah can push on to Messi´s level - Robertson|
|Rabada free to play in rest of South Africa-Australia series|
|F1 2018: Halo splits opinion ahead of Australia debut|
|Iniesta better than last year – Lopetegui|
|Federer yet to decide on clay-court season|
|Okon quits as Mariners head coach|
|LeBron triple-double powers Cavs past Bucks as Love returns|
|Lopetegui: Morata must earn World Cup spot|
|Ronaldo has asked about China – Scolari|
|Ebron signs two-year deal with Colts|
|Spieth, Reed to do battle in Match Play|
|Rangers´ Perez slaughtered, ate bull that caused broken elbow|
|Bills improve offensive line with Bodine, Newhouse|
|Braves phenom Acuna to start season in minors|
|Chargers add Pouncey on two-year deal|
|Ronaldo: I always show I´m the best|
|Joshua would love another Whyte tear-up, says Hearn|
|Manchester United not in Jorginho talks, says Napoli star´s agent|
|Hazard will not be false nine for Belgium, says Martinez|
|Bancroft confident on Starc and Marsh fitness|
|Mayweather to apply for MMA licence|
|Martial agent will not guarantee Manchester United stay|
|Del Potro and Djokovic on early collision course at Miami Open|
|Siemian swaps Broncos for Vikings|
|Broad chomping at the bit to bowl at Black Caps´ Taylor|
|Ronaldo slams ´fake news´ amid latest tax case claims|
|Van Dijk and Gundogan expect tough City-Liverpool tie|
|VAR to be introduced in Eredivisie|
|Di Biagio sees bright Italy future with Cutrone and Chiesa|
|Koeman won´t rule out Van Persie Netherlands return|
|I ate badly for years – how Messi solved his vomiting problem|
|England and Bath´s Watson out for the season|
|McLaren issues ´have been addressed´ ahead of F1 season opener|
|Tuchel feels he would still be at Dortmund without bomb attack|
|Pogba shows off new haircut as Ben Yedder trolls Man United star|
|Pogba cannot be happy but must focus on France, says Deschamps|
|Samuels slogs Windies closer to World Cup qualification|
|Having Rabada in third Test massive - Elgar|
|Cavs coach Lue steps away from job due to health reasons|
|Debuchy disappointed to be left out of latest France squad|
|Barton rejects England´s World Cup chances|
|Hamilton can become greatest F1 driver in history - Kovalainen|
|Sevilla coach Montella interested in Italy job|
|Football brain lacking, poor attitude and fourth choice – The Mourinho-Shaw saga at Manchester Unite|
|I´ve had enough - Pietersen confirms retirement|
|UEFA charges Marseille and Lyon for Europa League trouble|
|Broad ready to do damage in New Zealand series|
|Injured Chiellini out of Italy squad|
|Toulon-bound Webb out for rest of season|
|Buffon cites Astori among reasons for Italy return|
|Welbeck faces no action over alleged dive against Milan|
|Charnley switches back to league to join Warrington|
|Barcelona? I´m staying with PSG, insists Marco Verratti|
|Bastian Schweinsteiger & Ana Ivanovic announce birth of son|
|The numbers behind Cristiano Ronaldo´s 50 hat-tricks|
|Woods relishing end to frustrating Augusta absence|
|Consistency the only thing stopping me from being the best, claims Depay|
|Guardiola second to none tactially, says Man City midfielder Gundogan|
|McIlroy: Bay Hill win a huge confidence boost for Masters|
|F1 2018 Pre-Season Report: Mercedes|
|F1 2018: The best Opta facts ahead of the new season|
|Liverpool captain Henderson ponders Salah and Suarez comparison|
|Messi worried by the uncertainty retirement brings|
|F1 2018 Pre-Season Report: Ferrari|
|Hunt handed ban and fine but cleared to return|