"This was arguably the greatest day of my life," Spieth said. "It's incredible. It's a dream come true."

Spieth claimed the green jacket symbolic of Masters supremacy and the top prize of $1.8 million at the $10 million event by denying two of golf's top major champions another crown. "It was very nerve-wracking today," Spieth said. "With two major champions right behind me, I couldn't let up."

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England's Rose, the 2013 US Open winner and Spieth's last-pair playing partner, shot 70 to share second on 274 with 44-year-old US left-hander Mickelson, a five-time major winner who shot 69.

"I played a good solid round but I needed something exceptional. I just didn't quite get it. Jordan played great," Mickelson said.

Top-ranked Rory McIlroy, seeking a third consecutive major win to complete his career Grand Slam, was fourth on 276 after a 66. Woods, a 14-time major champion, fired a 73 to share 17th on 283, his best finish since 2013.

Spieth, who will jump from fourth to second in the world rankings, became the second-youngest winner in Masters history, five months older than Woods when he won his first major in 1997.

Also, Spieth became only the fifth wire-to-wire winner in Masters history, joining Craig Wood in 1941, Arnold Palmer in 1960, Jack Nicklaus in 1972 and Ray Floyd in 1976.

Spieth's now aiming for Rory's No 1 spot. "The ultimate goal I have is try to become the number one player in the world," he said.

Meanwhile, Indian golfer Anirban Lahiri drew the curtains on his Augusta Masters campaign with a string of 18 pars to total four-over 292. Lahiri finished the prestigious tournament in tied 49th spot.

Did you know?
As a four-year-old Texas Rangers (US baseball team) fan, Jordan Spieth attempted to catch a stray ball at a game, lost it in the lights and had his two front teeth knocked out!