Rory McIlroy certainly had an up-and-down round on day one of the Pebble Beach Pro-Am, carding a 68, but had the misfortune of double-bogeying a couple of holes heading for home, while Shane Lowry is a shot better off after his 67.
McIlroy, playing on Spyglass Hill course, got off to a lightning start, birdieing his opening two holes at 10 and 11 before holing out from a greenside bunker for eagle on the 14th.
The Masters champion turned in 31 but his progress was derailed as he three-putted for double bogeys twice in three holes at the third and fifth, both par threes.
These were preceded by birdies at the second and fourth and he concluded his round with a birdie on nine to get back to four under, six adrift of the lead.
At the Pebble Beach Links, Lowry posted three birdies before dropping consecutive shots on nine and 10.
He recovered strongly down the stretch, with four birdies in his final seven holes.
This included back-to-back birdies to finish, with Lowry plonking his tee shot on the short 17th inches from the hole before draining a 12-footer for birdie on the famous par-five 18th.
The 2019 Open Champion signed for five under leaving him tied for 19th.
Shane Lowry walks to the eighth hole at Pebble Beach
Leading the way is Japanese player Ryo Hisatsune after a stunning 62, leaving him on 10 under, with the American duo Keegan Bradley and Sam Burns a shot further back.
Tony Finau, Patrick Rodgers and the in-form Chris Gotterup sit two shots off the lead.
It was a rare off-day for world number one Scottie Scheffler limped to an even-par 72 at Pebble Beach.
“I feel like typically I’m good at scoring, and today I felt like I didn’t score at all,” Scheffler said in quotes on the PGA Tour website.
“Anything that kind of went wrong seemed to be going that direction. I actually feel like I’m playing pretty well. Just one of those days.”