Valspar Championship: Jordan Spieth wins after a play-off

Spieth became the fourth youngest PGA Tour winner - and the first teenager in 82 years - when he won the John Deere Classic in July 2013

Jordan Spieth beat fellow Americans Patrick Reed and Sean O'Hair in a play-off to win the Valspar Championship.

The trio finished on 10 under par, one shot ahead of Sweden's Henrik Stenson.

Spieth, 21, who claimed victory in Florida with a birdie on the third play-off hole, becomes the fourth player in the last 70 years to win two PGA tour titles before the age of 22.

England's Brian Davis shot a final-round two-under 69 to finish on four under, in joint 10th position.

Spieth (69) saved par on his final three holes to scramble his way into the play-off, while Reed (66) holed a 30-foot birdie putt to secure his place.

O'Hair (67), ranked 401st in the world and looking for a first win since 2011, was denied victory when his 12-foot birdie putt on the second play-off hole caught the lip.

The challenge of overnight third-round leader Ryan Moore (72) ended when he bogeyed two of the final three holes to finish eight under.

Lee Westwood (69) finished on three under, with Ian Poulter (69) a further shot behind.

It is only the second time in 50 years that the tournament has been decided by a play-off. Luke Donald won the other, when he claimed victory in 2012.