David Goffin atoned for his defeat in the Japan Open final last year to Nick Kyrgios by winning it on Sunday, beating Adrian Mannarino 6-3 7-5.
The victory extended Goffin's winning streak to nine matches, including four in Shenzhen last week when he won his first title in more than three years.
The Belgian stands at No.8 in the ATP Race to London rankings. With the injured Novak Djokovic and Stan Wawrinka ruled out, 10th place will be good enough to secure a place at the end-of-season showpiece.
Mannarino started slowly in his attempt to win a first ATP title. Goffin broke in the fourth game with a forehand winner down the line, and again in the seventh.
The Frenchman posted his first victory over a top-five opponent when defeating Marin Cilic in the semi-finals. As in that match, he gained a foothold in the middle of the second set, breaking Goffin to lead 4-2.
However, Goffin immediately broke back, and again in the 11th game before serving out to love for the title.
"I've been serving well for a few weeks," Goffin said. "My second serve is really effective; my opponents don't attack me, so I'm ready to play the second shot."
