Phil Mickelson was not happy at having to return on Tuesday to play the final two holes after bad light stopped play.
Sam Saunders, whose grandfather Arnold Palmer was among the Pebble Beach owners, scooped up hail and tossed it like a snowball.
A Monday finish brought on by rain and a freak hailstorm was only a minor inconvenience for the 48-year-old Mickelson.
Instead, he had to return early Monday morning to complete his 44th PGA Tour victory, claiming a fifth AT&T Pebble Beach National Pro-Am while also becoming the eighth-oldest victor in PGA Tour history.
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"It's a lot more work and effort to play at this level, " Mickelson said. A Lefty US Open win in June would be the sporting story of the year for me and just about the only thing that could beat it would be him winning it next year, back at Winged Foot, at the age of 50.
"I can see fine", he said to a PGA Tour rules official as they walked up the 16th fairway.
Making it even more special is Pebble Beach, where he made his pro debut at the US Open in 1992, where he won the first of his five titles in another Monday finish in 1998, this one in August because of rain.
Mickelson was at his best on a course he loves.
There was plenty of sunlight for the Monday morning finish, just no drama.
Casey, who lost the three-shot lead he had to start the final round, couldn't make it up on Mickelson over those final two holes Monday morning.
The greens were beat up (on Sunday). Mickelson was on the 17th tee, shaking his head when he heard the siren to stop play.
"Paul made the tough call, but it was the right decision in that he protected himself and myself for the competition, " Mickelson said.
Mickelson finished at 19-under 268. Casey finished alone in second place; Stallings completed play Sunday. Casey and FedEx executive Don Colleran had a one-shot lead in the pro-am.
The fourth and final day of action was delayed when hail began coming down, as the Pebble Beach Pro-Am Twitter account showed.
At least Phil Mickelson didn't break his own record for the longest event in PGA Tour history. He closed with a 65 for a 10-under-par 278 total.
"A phenomenal round of golf, " Casey said. He played the final 26 holes in cold, damp, and windy weather without a bogey. He finished par-birdie and shot 71. "I'll deal with that in six months".
Mickelson lives for the moment.
Mickelson now has a runner-up finish at the Desert Classic and a victory in four starts this season.
It's the thrill of competition.
His path to victory these days is never going to be mundane, even in a tournament where he went an entire round without missing a fairway - a 20-year first.