Nineteen-year-old Jordan Spieth outlasted David Hearn and Zach Johnson on the fifth hole of a playoff to win the John Deere Classic on Sunday, becoming the youngest winner on the PGA Tour in 82 years.

Spieth, who doesn't turn 20 for another two weeks, hit a two-foot par putt to earn a spot in the British Open field at Muirfield. He is also the first teenager to win a PGA title since Ralph Guldahl took the Santa Monica Open in 1931.

"I didn't think it would happen this early," said Spieth, who turned professional in December. "I had a plan. I guess the plan got exceeded."