Sweden's Ludvig Aberg produced a brilliant finish to win his second PGA Tour title in the Genesis Invitational.
Aberg birdied four of the last six holes at Torrey Pines to complete a final round of 66 and finish 12 under par, a shot ahead of American Maverick McNealy.
McNealy had set the clubhouse target following a closing 64 but ultimately paid the price for covering the last five holes in one over par.
The 29-year-old had to hole from 38 feet to save par on the first, but birdied the next five holes in a row and picked up another shot on the ninth to reach the turn in 30.
Further birdies on the 10th, 11th and 13th briefly gave McNealy a three-shot lead before he dropped his only shot of the day on the 14th after failing to get up and down from a greenside bunker.
Aberg, who had covered the front nine in 34, still need a strong finish to force himself into contention and duly birdied the 13th, 14th and 15th before two-putting from 70 feet for birdie on the par-five 18th.
Rory McIlroy was the best of the Irish trio, finishing tied 17th, nine shots behind Aberg, following a final round 72, while Seamus Power was one shot further back to share 24th. Shane Lowry finished in a tie for 39th place.
"It was awesome," Aberg told CBS. "It was a great fight.
"Obviously the golf course is tough but felt like I was in control of the ball flight all day and really proud of the way that I finished, it was really cool.
"The [par] putt on 12 was big because I think at that point the lead was at 12 [under] and it was a putt to stay at eight. I made it, which was nice, then a couple of a birdies and it was so much fun coming down the last few holes trying to win a tournament.
"It really is a special feeling."
McNealy, who had started the day five shots off the lead held by Patrick Rodgers, said: "It's more than I could have asked for to start the day.
"It was one of those things where I got on a roll early and there were some gettable flags. When you get on a roll you just don’t want to get off it and I tried to keep it going as long as possible.
"I had a few poor shots and an unlucky break or two at the end but definitely had a few things go my way early in this round and it was just a ton of fun to be up there, to have a chance. Ludvig played awesome."
World number one Scottie Scheffler briefly held a share of the lead when he covered the front nine in 31, but crucially bogeyed the 11th and eventually signed for a 66 to finish in a tie for third with Rodgers on nine under.
Meanwhile, Tiger Woods believes the rift in men's professional golf is going to "heal quickly" following the involvement of President Donald Trump.
PGA Tour commissioner Jay Monahan and player director Adam Scott met with Trump earlier this month as efforts continue to strike a deal between the US-based circuit, the DP World Tour and Saudi Arabia’s Public Investment Fund, which bankrolls LIV Golf.
Speaking on CBS during the final round of the Genesis Invitational, Woods said: "I think we’re in a very positive place right now.
"We had a meeting with the President. Unfortunately, I had some other circumstances that came up, but Jay and Adam, they did great during the meeting and we have another subsequent meeting coming up.
"I think that things are going to heal quickly. We’re going to get this game going in the right direction. It’s been heading in the wrong direction for a number of years."
Asked by Jim Nantz if that could be this year, or "very soon this year", Woods replied: "Yes and yes."
