Tsonga won the fifth title of his career in Tokyo
France's Jo-Wilfried Tsonga boosted his hopes of booking a place at the ATP World Tour Finals in London by winning the Japan Open title in Tokyo.
The 24-year-old beat Mikhail Youzhny of Russia 6-3 6-3 in Sunday's final to claim his third title of the year.
There are still three places up for grabs at the elite eight-man tournament at London's O2 Arena.
Tsonga, who also produced a late run to qualify last year, has three tournaments left to collect points.
Roger Federer, Rafael Nadal, Andy Murray, Novak Djokovic and Juan Martin del Potro have already qualified.
Andy Roddick looks certain to join them, but the remaining two places look set to be closely contested.
RACE TO LONDON
6 Roddick 4920 points
7 Tsonga 3690
8 Davydenko 3665
9 Verdasco 3460
10 Simon 3250
11 Soderling 3020
12 Gonzalez 2775
Tsonga is now seventh, ahead of Nikolay Davydenko.
"I am so happy to win another title and this puts me closer to London," Tsonga said after winning the fifth title of his career on Sunday.
"I have so much confidence now going into Shanghai and the indoor events. It's a great time of the year for me."
Tsonga's next tournament is the Masters 1000 tournament in Shanghai.
Last year, he qualified for the end-of-season tournament by beating David Nalbandian in a winner-takes-all final at the Paris Masters.
In the doubles final, Britain's Ross Hutchins missed out on his second title when he and Australian partner Jordan Kerr lost 6-2 5-7 10-8 to Austrian pair Julian Knowle and Jurgen Melzer.