Thai star Thongchai Jaidee needs a win at this week's Boonchu Ruangkit Championship in order to finish the year inside in the world's top 50.
The eight-time European Tour winner is currently ranked 52nd and needs a top-50 place at the end of the year to secure him berths at the majors and World Golf Championships next season.
The 3.5-million-baht Boonchu tournament, which tees off in Nakhon Ratchasima tomorrow, is his last chance move up in the rankings.
The 47-year-old golfer, who reached as high as 36th position earlier this year, is returning to action after a joint-12th finish at the Hong Kong Open three weeks ago.
On paper, he stands a good chance of winning the title at the Rancho Charnvee Resort and Country Club as he is the highest-ranked player in the field.
"Hopefully, I can finish the year inside the top 50 in the world," said Thongchai who won at the 100th French Open this year.
The Boonchu event is the season finale of both the All Thailand Golf Tour and Asian Development Tour (ADT).
Last year, Thongchai was tied for second on 21-under, one shot behind winner Phachara Khongwatmai.
The 18-year-old star is looking forward to defending the title for his second crown of the year after his success at the E-San Open in March.
Other notable players in the field include Kiradech Aphibarnrat, Pavit Tangkamolprasert, Thaworn Wiratchant, Prayad Marksaeng, Thithiphun Chuayprakong, Chapchai Nirat and Prom Meesawat, all winners on the Asian Tour.
Meanwhile, Suradit Yongcharoenchai and Panuwat Muenlek will make last-ditch efforts to earn Asian Tour cards for 2017.
They need to be ranked inside the top eight of the ADT money list on Sunday.
Suradit is currently ranked seventh and Panuwat ninth.
Normally, only the top-five earners receive Asian Tour cards but this time three players -- Johannes Veerman (1), Pavit Tangkamolprasert (3) and Poom Saksansin (6) -- have already secured berths on the continental main tour through their wins on the Asian Tour.
"My priority is to get my Asian Tour card for next year. Winning twice this season has been a great motivation for me to play well, especially coming into the final event of the season this week," said the 31-year-old Thai, who is a three-time ADT winner.