Matt Kuchar and JJ Henry carded seven-under-par 65s to share the first-round lead at the Pebble Beach National Pro-Am in California.
Kuchar played his round at the Poppy Hills course while Henry competed at Pebble Beach.
The four-day tournament is played over three courses – the other being Spyglass Hill – for the first three rounds with the final 18 holes contested at Pebble Beach.
Kuchar, who endured a brutal 2003 campaign in which he finished 182nd on the money list, capped his round with three consecutive birdies.
“That was a surprise,” Kuchar admitted. “I think it was midway through the back nine I realised that the greens are getting pretty bumpy and I was hoping to par in.
“I think I got to five under there and was really just looking to hit the ball in the middle of the green and two-putt.
“The greens can get pretty bumpy in the afternoon.”
Tommy Tolles is third after a 66 with Vijay Singh heading a group of eight golfers on 67.
Singh is currently on a string of 11 consecutive top-10 finishes – three shy of Jack Nicklaus’ record set in 1977.
Phil Mickelson and Craig Stadler are two of seven players tied at four under.
Defending champion Davis Love III is 10 shots off the lead after finishing at Spyglass with a three-over 75.