Jordan Spieth made his first trip Down Under a successful one, shooting an 8-under 63 on Sunday to win the Australian Open by six strokes.

Spieth's four-round total of 13-under 271 on the tough, windy Australian Golf Club made him the first American to win the Australian Open since Brad Faxon in 1993, when the 21-year-old Spieth was four months old.

Spieth birdied four holes on the front nine — three of them in a row — to lead by three after nine holes, then added four on the back nine, never threatening to lose his lead.

Adam Scott shot 71 and finished fifth, nine strokes behind. Defending champion Rory McIlroy, who shot 76 Saturday, finished with a 72 and was 2-over, 15 strokes behind Spieth.