NASSAU, Bahamas (AP) -- One year ago, Jordan Spieth had doubts that his game was good enough to close out tournaments.
That's no longer the case.
Spieth last year failed to convert three times when he had at least a share of the 54-hole lead, including the Masters and The Players Championship. He ended 2014 by going wire-to-wire in the Hero World Challenge at Isleworth.
He returns to defend his title having won four times this year with a 54-hole lead, which includes the Masters and the U.S. Open. That helped carry him to No. 1 in the world.