American golfer Matt Kuchar set the pace in California on Thursday.
The Premier Golf League has contacted Tiger Woods, who is investigating the proposed 18-event season that would include a team element.
Canadian Nick Taylor claimed his second PGA Tour win with victory at the Pebble Beach Pro-Am.
Phil Mickelson and Jason Day are in contention, but Nick Taylor leads the Pebble Beach Pro-Am.
Canadian Nick Taylor tops the leaderboard at the halfway stage of the PGA Tour tournament.
Canadian golfer and one-time PGA Tour winner Nick Taylor carded a bogey-free eight-under-par 63 in California.
Phil Mickelson wants to earn a spot at the U.S. Open, ruling out accepting a special exemption.
The R&A and USGA want to "break the cycle of increasingly longer hitting distances and golf courses".
Despite not playing this week, four-time major winner Rory McIlroy will soon return to the summit of the rankings.
Webb Simpson had not won a PGA Tour trophy since capturing his fifth piece of silverware via The Players Championship in 2018.