Tied for the lead with two holes to play, Woods kept his shots on land and made two pars.
Garcia hit three balls into the water for a quadruple bogey-double bogey finish.
If there was special satisfaction in beating Garcia again, Woods kept that to himself. What mattered was having a chance to win, closing it out like he does so often, and capturing the richest prize on the PGA Tour for the first time in a dozen years.
"We just go out there and play," Woods said. "I had an opportunity to win the golf tournament when I was tied for the lead today, and I thought I handled the situation well and really played well today when I really needed to. And that's something I'm excited about it."
Woods allowed the final hour to turn into a tense duel by hooking his tee shot into the water on the 14th hole for double bogey. But his short game bailed him out to save par on the 15th and make a critical birdie on the 16th, and he was solid on the final two holes for a 2-under 70.
If only it were that simple for the Spaniard.
Garcia was standing on the 17th tee shot, staring across to the island green to watch Woods make his par. He took aim at the flag with his wedge and hung his head when he saw the ball splashed down short of the green. Then, Garcia hit another one in the water on his way to a quadruple-bogey 7. The meltdown was complete when Garcia hit his tee shot into the water on the 18th.
"It's always nice to have a chance at beating the No. 1 player in the world, but unfortunately for me, I wasn't able to this week," Garcia said.
Woods was in the scoring trailer when he watched on TV as Swedish rookie David Lingmerth missed a long birdie putt that would have forced a playoff. It raced by the cup, and Lingmerth three-putted for bogey.
"How about that?" Woods said to his caddie, Joe LaCava as he gave him a hug.
Woods finished on 13-under 275.
He won The Players for the first time since 2001 and became the fifth multiple winner at Sawgrass since The Players moved to this former swamp in 1982. It was his 78th career win on the PGA Tour, four short of the record held by Sam Snead. And it was his first time winning with his girlfriend, Olympic ski champion Lindsey Vonn, at the tournament.
Lingmerth closed with a 72 and finished two shots behind along with Kevin Streelman (67) and Jeff Maggert, who also was tied for the lead until finding the water on the 17th to make double bogey. The 49-year-old Maggert birdied the 18th for a 70.
Garcia took 13 shots to cover the final two holes — 6-over par — and tumbled into a tie for eighth.
There was a four-way tie for the lead after Woods made his double bogey, and the infamous 17th green took out Maggert and Garcia. After Garcia went into the water twice, Lingmerth missed an 8-foot birdie putt that would have tied him for the lead.
Given their public sniping at each other over the weekend, it was only fitting that Garcia had the best chance to beat Woods.
Their dispute started Saturday when Garcia complained in a TV interview that his shot from the par-5 second fairway was disrupted by cheers from the crowd around Woods, who was some 50 yards away in the trees and fired them up by taking a fairway metal out of his bag. He said Woods should have been paying attention, and it became a war of the words the next two days.
"Not real surprising that he's complaining about something," Woods said.
"At least I'm true to myself," Garcia retorted. "I know what I'm doing, and he can do whatever he wants."
When they finished the storm-delayed third round Sunday morning, Garcia kept at it, saying that Woods is "not the nicest guy on tour."
Woods had the last laugh. He had the trophy.
Garcia, when asked if he would have changed anything about the flap with Woods, replied, "It sounds like I was the bad guy here. I was the victim. I don't have any regrets of anything."
The real villain was the infamous 17th hole.
"When you've got water in front of the green, that's not a good time to be short of the green. You know, it was close," Maggert said. "What can I say? A wrong shot at the wrong time and you get penalized on this golf course."
It was at the 17th hole five years ago where Garcia won The Players Championship, when Paul Goydos hit into the water in a sudden-death playoff. This time, the island green got its revenge on him. Garcia hit a wedge and felt he caught it just a little bit thin, which is usually all it takes.
"That hole has been good to me for the most part," Garcia said. "Today, it wasn't. That's the way it is. That's the kind of hole it is. You've got to love it for what it is."
Woods earned $1.71 million, pushing his season total to over $5.8 million in just seven tournaments. This is the 12th season he has won at least four times — that used to be the standard of a great year before he joined the PGA Tour in 1996 — and this was the quickest he has reached four wins in a year.
It was the second time has won on Mother's Day.
"Sorry, Mom," he said into the camera. "I think she might have had a heart attack. I was in control of the tournament, and I just hit the worst shot I could possibly hit."
Typical of Woods these days, there were questions about where he took the drop — some 255 yards from the hole. NBC Sports analyst Johnny Miller suggested it was a "borderline" where he took the drop. But Mark Russell, vice president of competition for the PGA Tour, said there was nothing wrong with the drop. Woods conferred with Casey Wittenberg, who said there was "no doubt" that Woods took the drop in the right spot.
"He asked me exactly where it crossed," Wittenberg said. "I told him I thought it crossed on the corner of the bunker, right where he took his drop. And it's all good."
Woods wound up with a double bogey, and he nearly fell out of the lead on the 15th until he saved par with an 8-foot putt.
"The shot that turned the tide was the putt on 15," Woods said. "To go double bogey-bogey would have been huge. But to save a putt there and get some momentum going to the next three holes was big."
Woods and Garcia played four tension-free holes Sunday morning to complete the third round, and they shook hands without words when they finished — Woods with a 71, Garcia with a 72 to share the 54-hole lead with Lingmerth.
With a three-way tie, Garcia wound up in the final group because he was first to play at the start of the third round.
Garcia, however, continued to fuel the bad feelings between them.
He told Sky Sports, "I'm not going to lie, he's not my favorite guy to play with. He's not the nicest guy on tour." And then he told Golf Channel, "We don't enjoy each other's company. You don't need to be a rocket engineer to figure that out."
Woods downplayed the episode and said it didn't matter who joined him on the tee. "I'm tied for the lead, so I'm right there."
And that's where he usually wins. Woods now is 53-4 in his PGA Tour career when he has at least a share of the lead going into the final round.
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