David Ferrer moved up to joint seventh in the race for a place at the year-ending World Tour Finals with a 4-6, 6-4, 7-5 win over Steve Johnson in the Austrian Open final Sunday.
The 33-year-old Spaniard added a 26th title to his career collection and joined Roger Federer on five titles this season.
Only world number one Novak Djokovic, with nine, has more trophies to his name in 2015.
Ferrer, the 2014 Vienna finalist against Andy Murray, joined Kei Nishikori in provisional seventh spot in the race for one of two places remaining in the eight-man field for the London season finale from November 15-22.
However, Nishikori's chances of qualifying are looking slim after he withdrew from next week's Basel event due to injury.
"This is a fantastic victory after a tough final," said Ferrer.
"I'm not qualified yet but I'm fighting for a place in London. I'll go to (his hometown of) Valencia next week and really try to qualify for the year-end finals."
Ferrer set up three match points in the third set with his seventh ace after a break in the previous game and converted on his first opportunity against his American opponent.