James Kostic

11W 3L 0D

James Kostic

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James Kostic

Nickname: N/A
Age: N/A
Record: 11-3-0
Hometown: Randwick
Nationality:
Australia
Height: 170 cm / 5′ 7″
Last Weight: 58.96 kg / 130 lb
Reach: 170 cm / 67″
Stance: Orthodox
Gym: SRG Thai Boxing Gym
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Fight Record

Show cancelled (1)

Auto Muangphaphum

WIN Unanimous Decision

Rajadamnern Knockout

4th September 2026

James Kostic defeated Auto Muangphaphum by unanimous decision.

Wattana Wor Auracha

Cancelled

Rajadamnern Knockout

4th September 2026

This fight was cancelled.

Phet A-Cheer

LOSS Unanimous Decision

Rajadamnern World Series 205

1st August 2026

Phet A-Cheer defeated James Kostic by unanimous decision.

Miki Ghazali

WIN Unanimous Decision

Rajadamnern World Series 200

27th June 2026

James Kostic defeated Miki Ghazali by unanimous decision.

Samat Lek

UNKNOWN

1774 Muay Thai Series - 15th Edition

21st February 2026

We have not registered a winner for James Kostic vs Samat Lek yet, as the fight has yet to take place or the result is not yet verified. Please check back soon.

Wanpadej Looksuan

LOSS Unanimous Decision

Rajadamnern World Series 163

11th October 2025

Wanpadej Looksuan defeated James Kostic by unanimous decision.

Click to show more

Mahamongkol Move on Chiang Mai

UNKNOWN

Roots Muay Thai 30: Slings & Arrows

6th September 2025

We have not registered a winner for James Kostic vs Mahamongkol Move on Chiang Mai yet, as the fight has yet to take place or the result is not yet verified. Please check back soon.

Wanpetchlek FA Group

UNKNOWN

1774 Muay Thai Series - 13th Edition

2nd August 2025

We have not registered a winner for James Kostic vs Wanpetchlek FA Group yet, as the fight has yet to take place or the result is not yet verified. Please check back soon.

Kaoklai Chor Hapayak

WIN Unanimous Decision

Rajadamnern World Series 139

26th April 2025

James Kostic defeated Kaoklai Chor Hapayak by unanimous decision.

Chomroeun KhunKhmer

WIN

Rebellion Muay Thai 33

22nd March 2025

James Kostic defeated Chomroeun KhunKhmer by .

Ognjen Topic

WIN Unanimous Decision

Rajadamnern World Series 126

25th January 2025

James Kostic defeated Ognjen Topic by unanimous decision.

Yunes Boualem

WIN Decision

Rebellion Muay Thai 32

30th November 2024

James Kostic defeated Yunes Boualem by decision.

Toon 187 Muay Thai

UNKNOWN

1774 Muay Thai Series - 11th Edition

26th October 2024

We have not registered a winner for Toon 187 Muay Thai vs James Kostic yet, as the fight has yet to take place or the result is not yet verified. Please check back soon.

Ibrahim Abou Saleh

LOSS Decision

Road To Rajadamnern x Rebellion

31st August 2024

Ibrahim Abou Saleh defeated James Kostic by decision.

Michael Lamrock

WIN Decision

Powerhouse Fight Series 12

6th July 2024

James Kostic defeated Michael Lamrock by decision.

Aniss Mebarek

WIN Decision

Rebellion Muay Thai 31

25th May 2024

James Kostic defeated Aniss Mebarek by decision.

Enrico Leasa

WIN KO R4

1774 Muay Thai Series - 9th Edition

17th February 2024

James Kostic defeated Enrico Leasa by knockout in round 4.

Petchmedmai Gor.Kesanon

WIN Unanimous Decision

Rajadamnern World Series 73

3rd February 2024

James Kostic defeated Petchmedmai Gor.Kesanon by unanimous decision.

Matty Clarke

WIN Decision

Powerhouse Fight Series 10

8th July 2023

James Kostic defeated Matty Clarke by decision.

WIN UD - 58.96 KG / 130 LBS -Muay Thai

Auto Muangphaphum

4th Sep 2026 - Rajadamnern Knockout

James Kostic defeated Auto Muangphaphum by unanimous decision.

Cancelled -Muay Thai

Wattana Wor Auracha

4th Sep 2026 - Rajadamnern Knockout

This fight was cancelled.

LOSS UD - 58.96 KG / 130 LBS -Muay Thai

Phet A-Cheer

1st Aug 2026 - Rajadamnern World Series 205

Phet A-Cheer defeated James Kostic by unanimous decision.

WIN UD - 58.05 KG / 128 LBS -Muay Thai

Miki Ghazali

27th Jun 2026 - Rajadamnern World Series 200

James Kostic defeated Miki Ghazali by unanimous decision.

UNKNOWN -Muay Thai

Samat Lek

21st Feb 2026 - 1774 Muay Thai Series - 15th Edition

We have not registered a winner for James Kostic vs Samat Lek yet, as the fight has yet to take place or the result is not yet verified. Please check back soon.

LOSS UD - 58.96 KG / 130 LBS -Muay Thai

Wanpadej Looksuan

11th Oct 2025 - Rajadamnern World Series 163

Wanpadej Looksuan defeated James Kostic by unanimous decision.

Click to show more

UNKNOWN - 59.00 KG / 130 LBS -Muay Thai

Mahamongkol Move on Chiang Mai

6th Sep 2025 - Roots Muay Thai 30: Slings & Arrows

We have not registered a winner for James Kostic vs Mahamongkol Move on Chiang Mai yet, as the fight has yet to take place or the result is not yet verified. Please check back soon.

UNKNOWN - 59.00 KG / 130 LBS -Muay Thai

Wanpetchlek FA Group

2nd Aug 2025 - 1774 Muay Thai Series - 13th Edition

We have not registered a winner for James Kostic vs Wanpetchlek FA Group yet, as the fight has yet to take place or the result is not yet verified. Please check back soon.

WIN UD - 58.96 KG / 130 LBS -Muay Thai

Kaoklai Chor Hapayak

26th Apr 2025 - Rajadamnern World Series 139

James Kostic defeated Kaoklai Chor Hapayak by unanimous decision.

WIN - 59.00 KG / 130 LBS -Muay Thai

Chomroeun KhunKhmer

22nd Mar 2025 - Rebellion Muay Thai 33

James Kostic defeated Chomroeun KhunKhmer by .

WIN UD - 61.23 KG / 135 LBS -Muay Thai

Ognjen Topic

25th Jan 2025 - Rajadamnern World Series 126

James Kostic defeated Ognjen Topic by unanimous decision.

WIN Dec - 59.00 KG / 130 LBS -Muay Thai

Yunes Boualem

30th Nov 2024 - Rebellion Muay Thai 32

James Kostic defeated Yunes Boualem by decision.

UNKNOWN -Muay Thai

Toon 187 Muay Thai

26th Oct 2024 - 1774 Muay Thai Series - 11th Edition

We have not registered a winner for Toon 187 Muay Thai vs James Kostic yet, as the fight has yet to take place or the result is not yet verified. Please check back soon.

LOSS Dec -Muay Thai

Ibrahim Abou Saleh

31st Aug 2024 - Road To Rajadamnern x Rebellion

Ibrahim Abou Saleh defeated James Kostic by decision.

WIN Dec -Muay Thai

Michael Lamrock

6th Jul 2024 - Powerhouse Fight Series 12

James Kostic defeated Michael Lamrock by decision.

WIN Dec - 59.00 KG / 130 LBS -Muay Thai

Aniss Mebarek

25th May 2024 - Rebellion Muay Thai 31

James Kostic defeated Aniss Mebarek by decision.

WIN KO R4 -Muay Thai

Enrico Leasa

17th Feb 2024 - 1774 Muay Thai Series - 9th Edition

James Kostic defeated Enrico Leasa by knockout in round 4.

WIN UD - 58.96 KG / 130 LBS -Muay Thai

Petchmedmai Gor.Kesanon

3rd Feb 2024 - Rajadamnern World Series 73

James Kostic defeated Petchmedmai Gor.Kesanon by unanimous decision.

WIN Dec -Muay Thai

Matty Clarke

8th Jul 2023 - Powerhouse Fight Series 10

James Kostic defeated Matty Clarke by decision.

Information on this page is based on eligible data documented in the Muay Thai Records database.

Statistics

W-L-D

11-3-0

(T)KO

1 -0

WIN%

Fight Statistics

Win Rate

79%

Overall win rate

Finish Rate

Wins by KO / TKO

Decision Rate

82%

Wins by decision

Fight History

W 2026

L 2026

W 2026

L 2025

W 2025

W 2024

L 2024

W 2024

Most Recent

Oldest

Record by Promotion

Rajadamnern World Series

4 W · 2L · 0D

Rebellion Muay Thai

3 W · 1L · 0D

Powerhouse Fight Series

2 W · 0L · 0D

1774 Muay Thai Series

1 W · 0L · 0D

Rajadamnern Knockout

1 W · 0L · 0D

About James Kostic

James Kostic is an Australian Muay Thai fighter. He holds a documented record of 11–3–0, with 1 win by KO / TKO. He stands 170 cm (5′ 7″), and his last recorded fight weight was 58 kg (130 lb).

Career

James Kostic has competed under Rajadamnern World Series, Rebellion Muay Thai and 1774 Muay Thai Series, among others.

Throughout his career, James has competed at events across Australia and Thailand.

James Kostic made his Rajadamnern World Series debut on RWS 73 against Petchmedmai Gor.Kesanon on the 3rd February 2024, where he won by unanimous decision.