Last year's winner Thomas Bjorn of Denmark shot a closing 64 to finish seventh on 277.
Woods has struggled with his swing all year but had still produced 10 top-10 finishes in his previous 12 tournaments before arriving in Miyazaki.
He won the last of his eight majors at the 2002 US Open but Woods insisted he was close to returning to his best form.
"I'm excited things have started to come together in the last three or four months," said the 28-year-old American. "I'm excited about my prospects for next year."
Woods was never troubled in yesterday's final round and carded five birdies against two bogeys at the Phoenix Country Club.
"I knew that if I shot under par on each side the guys chasing me would have to shoot in the 50s to catch me and that's pretty tough to do," he joked.
A mix-up between Gary Player and Mark McNulty, where they played the wrong ball, allowed the US to edge into a 6-1/2 to 5-1/2 lead over the Rest of the World in the UBS Cup on Saturday.
In the top fourball match, South African Player and Zimbabwe-born Irishman McNulty hit each other's ball from the ninth fairway, an error which cost them the hole against Arnold Palmer and Jay Haas with the match all square.
The score remained unchanged through the back nine and with results going their way in the other matches, the US were in a strong position to retain the UBS Cup.
The lone victory from the Rest of the World team came from the reliable pairing of Briton Colin Montgomerie and German Bernhard Langer who recorded their ninth matchplay victory in 11 matches together by overcoming Hale Irwin and Fred Funk 2 and 1.
The Rest of the World team, who have never won the Ryder Cup-style event for over 40s, need to win seven of the 12 final day singles to win the Cup.
Annika Sorenstam shot an even-par 72 on Saturday to maintain a slight lead heading into the final round of the US$1 million ADT Championship.
Sweden's Sorenstam has a one-shot margin over Jennifer Rosales, of the Philippines, in the LPGA's season-ending event.
Having already clinched her seventh Player of the Year Award, Sorenstam is aiming for her eighth victory of the season.
"I don't know if I can call it a roller-coaster day, but it's been tough," said Sorenstam, who moved to 10-under 206 through 54 holes.
Sorenstam entered the day with a three-shot lead, but the Swedish superstar quickly saw that slip as she stumbled to two bogeys over the first five holes.
After another bogey on No. 11, Sorenstam recovered and showed why she is the top women's golfer in the world.
She converted birdies at Nos. 13, 15 and 17.
Sorenstam is one stroke in front of Rosales (69) and American Cristie Kerr (70). Rosales, who is playing with an injury, enjoyed a bogey-free round.
"I'm just happy to be here," Rosales said.