"It's disappointing that I didn't grab that fourth green jacket," said Mickelson, whose wife and three kids flew in from San Diego on Sunday. "It's disappointing that I didn't make it happen on the back nine and get the putts to fall, even though I felt like I was hitting them pretty good. I gave them all good chances. I just couldn't quite get them to go."
Lee Westwood of England ran off three straight birdies, but the last one hurt. He had an 8-foot eagle putt to tie for the lead on the 15th and missed it, and a final birdie on the 18th gave him a 68 and only made it look close.
"I don't feel like giving up just yet," said Westwood, who had his seventh top-3 finish in a major since the 2008 U.S. Open.
Matt Kuchar tied for the lead with a short eagle putt on the 15th, then bogeyed the 16th for a 69. Peter Hanson of Sweden, who had a one-shot lead going into the final round, didn't make a birdie until the 15th hole. He closed with a 73.
Watson, a 33-year-old from Bagdad, Fla., in the Panhandle, won for the fourth time in his career and moves to No. 4 in the world, making him the highest-ranked American in golf. He became the fifth left-hander to win the Masters in the last 10 years.
And he created a legion of fans — especially in Georgia, where he returned to school to get his degree — who chanted, "Bubba! Bubba! Bubba!" as he hugged everyone he could find on the 10th green.
"I don't play the sport for fame. I don't try to win tournaments for fame," Watson said. "I don't do any of that. It's just me. I'm just Bubba. I goof around. I joke around.
"I just want to be me and play golf."
Tiger Woods used to play practice rounds with Watson at the majors because he was intrigued how a guy who has never had a coach could make the ball move any direction he wanted.
Watson hasn't had a lesson since he was 10. His father taught him the basic grip and basic swing, and Watson took it from there. The challenge has always been figuring out the game by himself. "I just swing funny, and somehow it works," he once said.
Woods was among those who congratulated Watson on Twitter before the trophy presentation.
"Congrats (at)bubbawatson. Fantastic creativity. Now how creative will the champions dinner be next year?" he tweeted.
Oosthuizen was trying to become only the sixth player to have won majors at Augusta National and St. Andrews — two of the most revered courses in golf — and almost got it done.
He stayed in the lead with a tricky par putt from 10 feet on the 14th and a 7-foot birdie putt on the 15th, but Watson caught him by making his fourth straight birdie on the back nine, a tee shot into 4 feet on the 16th.
Both hung on for pars the rest of the way.
Woods went from the favorite to not even a factor on the weekend. He closed with a birdie on the 18th for a 74 and had his highest score ever at the Masters as a pro, finishing at 5-over 293 — 15 shots out of the lead.
This, from a guy who only two weeks ago won by five shots at Bay Hill, presumably signaling a return.
"It was an off week at the wrong time," Woods said.
He tied for 40th with U.S. Open champion Rory McIlroy of Northern Ireland, also favored to contend. McIlroy was one shot out of the lead after two rounds, then had a 77-76 weekend.
Woods and McIlroy were expected to be a big part of the show. This being Augusta, the show managed to go on. There simply is no greater theater in golf than the Masters, and it lasted all day.
An ace for Bo Van Pelt on the 16th — the second straight year he has made two eagles on the back nine — for a tournament-best 64. An ace for Adam Scott on the same hole, sending him to a 66.
The loudest cheer was for Oosthuizen's albatross.
Hanson was sizing up a difficult chip from right of the first green when Augusta erupted in cheers from down below. No one was sure what it meant until Hanson and Mickelson hit their tee shots on the par-5 second, glanced over at the white leaderboard behind the eighth green and saw that Oosthuizen had gone from 7 under to 10 under ahead of them.