Pebble Beach Pro-Am: Phil Mickelson one shot off first-round lead

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"I'm not going to chase them as hard as a year ago because you can get hurt doing that, you can get into some bad patterns".

McDowell was teeing-up at Pebble Beach where in 2010 he lifted the US Open trophy though he has been side-lined for some six weeks after bruising the lunate bone in his left wrist while hitting balls in December in the Bahamas.

Five-time major champion Phil Mickelson sits one shot off the lead after making five birdies on the back nine for a 65 as he hit every fairway in a PGA Tour round for the first time since 1998.

"History was made today", he said afterwards.

The unusually accurate driving helped the five-times major champion to a six-under-par 65 at Monterey Peninsula, one of three courses used at the event.

Mickelson, who closed with a 5-under-par 32 on the back nine, said getting off to a fast start was critical with 100 percent chance of rain in Friday's forecast and the weekend likely to be very wet as well.

"I have the honour to play all three courses here and, just because of such handsome scenery, I couldn't even focus on where my ball was going", Choi said of Pebble Beach Golf Links, which is set on the famed Monterey Peninsula.

"I was even through five holes and then I made a nice little run".

Brandt Snedeker produced a contender for birdie of the year after he made a four on the iconic 18th despite pulling his drive onto the beach in the Pebble Beach Pro-Am. He birdied his last hole to reach 10-under par, joining Lucas Glover (66 at Pebble Beach) and Scott Langley (69 at Spyglass Hill).

Cody Gribble had a 6-under 66 at Spyglass Hill and Si Woo Kim had a 6-under 66 at Pebble Beach.

Jason Day hopes work-life balance can help him go on to finally win the Pebble Beach Pro Am after shooting himself into contention on day one in California.

Spieth is part of a field that also includes world number three Dustin Johnson, who won the European Tour's Saudi International on Sunday. The players will likely have to shrug off foul weather heading toward the Monterey Peninsula.

"I was really surprised he could say that", said Choi, who needed a translator to share that.