The Mandiri Indonesia Open commences on Thursday at Pondok Indah Golf Course in Jakarta – providing the perfect event to start what will be a thrilling second half to the season on the Asian Tour.

England’s Steve Lewton starts as the defending champion in an event packed with talent. Thailand’s Jazz Janewattananond, Australian Ryan Peake, and Hong Kong’s Taichi Kho are all competing.

The tournament, always a popular event, is the ninth leg of the season on the Asian Tour. It will be followed by 13 more tournaments, from September to December, offering over US$20million in prizemoney.

Tournament Information

• Tournament: Mandiri Indonesia Open
• Date: August 28-31, 2025
• Venue: Pondok Indah Golf Course, Jakarta
• Par/Yards: 72 / 7,243 yards
• Purse: US$500,000 (winner US$90,000)
• Defending champion: Steve Lewton (ENG)
• Asian Tour leg: Ninth
• Edition of tournament: 41st
• Total number of players: 150
• Format: Stroke play tournament over four rounds of 18 holes with a cut made after 36 holes. The leading 65 professionals plus ties progress.
• Social media hashtags: #TimeToRise

Last year’s champion Steve Lewton. Picture by Graham Uden/Asian Tour.

Field Breakdown

• Order of Merit winners: Sihwan Kim (2022), Jazz Janewattananond (2019)
• Nationalities: 26
• Top contenders: Danthai Boonma (THA), Ryan Peake (AUS), Poom Saksansin (THA), Kevin Yuan (AUS), Steve Lewton (ENG), Taichi Kho (HKG), Jazz Janewattananond (THA)
• Highest ranked player on OWGR: Danthai Boonma# 401
• Highest ranked player on 2025 Asian Tour Order of Merit: Danthai Boonma (THA) #6
• of amateurs: 14
• of Indonesian players in the field: 33

Tournament Notes

• Defending champion Steve Lewton from England has not had his best season on the Asian Tour and will be looking at his fond memories from last year’s win to boost his confidence. The two-time Asian Tour winner has a T24 as his best finish on the Asian Tour this season but during a tune up at last week’s Asian Development Tour event in Indonesia he finished T5 so he might be trending back into form.
• Danthai Boonma from Thailand is the highest ranked player on the Order of Merit in sixth place after a runner-up at the International Series Morocco in July and a T8 at the season opening Smart Infinity Philippine Open in January. He has also recorded a win on All Thailand Tour’s Singha Championship in early August as well as a runner up on the same tour two weeks earlier.
• New Zealand Open presented by Sky Sport champion Ryan Peake from Australia has not had the easiest time transitioning to the Asian Tour since his win in Queenstown, earning him a start in the Open Championship at Royal Portrush, with a T33 in Morocco as his best result since. Still, the number seven on the Order of Merit will have plenty of time to make amends with the heavy part of the schedule coming up starting this week in Jakarta.
• Fellow Australian Kevin Yuan has enjoyed a consistently good 2025 season on the Asian Tour having started out with a fourth-place finish in the Smart Infinity Philippine Open and a T8 at the International Series India presented by DLF. Since then, he has posted a T10 at the International Series Morrocco and a T15 at the Kolon Korea Open, as well as a T3 on the China Tour in Shandong. He is 12^th on the Order of Merit.
• Thai player Poom Saksansin was runner up to his countryman Sadom Kaewkanjana at the Kolon Korea Open after coming up two shots short and also recorded another top five at the Smart Infinity Philippine Open where he finished T5. Although not one of the longer players off the tee, Poom is known for his grittiness and accuracy and will always be dangerous when the putter gets hot.
• Taichi Kho from Hong Kong had a good start to his 2025 Asian Tour campaign with a T8 at the New Zealand Open presented by Sky Sport, a T6 at the International Series Macau presented by Wynn and a T4 at the Kolon Korea Open. He also posted a T10 at the International Series Morocco in July. The winner of the 2023 World City Championship presented by Hong Kong Golf Club looks ready to notch his second Asian Tour victory soon. He is one place behind Yuan on the Merit list.
• An Order of Merit winner in 2019, Thailand’s Jazz Janewattananond has been out of the winner’s circle, since the 2022 International Series Morocco, way too long for his caliber of player. But with a T2 at the GS Caltex Maekyung Open in May and a T8 at the International Series Macau presented by Wynn in March during the first half of the year, the seven-time Asian Tour winner looks like he’s back on the right track with his swing and ready to win again.