Watson closed with 3-under-par 69 to win the Masters Tournament by three shots over Jonas Blixt (71) and Jordan Speith (72).
Watson, the 2012 Masters champion, birdied Nos. 8 and 9 to take the lead and never looked back, finishing at 8-under-par 211. The former University of Georgia golfer joins a list of 16 other players to win multiple green jackets.
The 35-year-old Watson, who opened the final round tied with Spieth at 5-under, birdied Nos. 6 and 8 and 9 to move to 8-under. Spieth, who was trying to become the youngest Masters winner at age 20, led for most of the front nine.
He birdied the par-5 second before holing his bunker shot at No. 4 for birdie. After finding the greenside bunker at No. 5, Spieth bounced back in a big way. He fired his tee shot to three feet at No. 6 for birdie. At No. 7, Spieth trickled in a 12-foot, downhill putt for another birdie to extend his lead to two over Watson.
Momentum switched in a hurry after Watson got up and down from the back of the green for birdie at the par-5 eighth. Spieth missed a 4-foot par putt. While Spieth missed another four-foot par putt at No. 9 after missing the green, Watson rolled in a 15-foot birdie putt for a two-shot lead.
Watson slammed the door at the par-5 13th hole when his 366-yard drive found the left side of the fairway. His wedge approach to the green set up a two-putt birdie for a three-shot advantage.
Spieth was within a shot of Watson until he found the water at No. 12. Despite recovering for bogey, the young superstar couldn’t mount a charge down the stretch.
Miguel Angel Jimenez birdied Nos. 12, 14 and 16 to finish with 71. The 50-year-old Jimenez recorded his best Masters finish with his fourth-place showing.
Matt Kuchar briefly led at 6-under after posting birdies at Nos. 2 and 3. After the former Georgia Tech standout double-bogeyed the par-3 fourth, he never recovered. Kuchar shot 74 to finish tied for fifth with Rickie Fowler (73) at 286. Lee Westwood (73) placed seventh one shot back.Bernhard Langer, the two-time Masters champion, recorded 69 to tie for eighth at 288 with Jimmy Walker (70), Rory McIlroy (69), John Senden (73), Kevin Stadler (73) and Thomas Bjorn (74).
Amateur Oliver Goss shot 75 to finish at 10-over. As the only amateur to survive the cut, he will receive the Silver Cup.