Si Woo Park

Mixed martial arts career Early career Park made her professional debut against Jeong Eun Park at Road FC 042 x Chungju World Martial Arts Festival on September 23, 2017. Park won the fight by unanimous decision.

Park was scheduled to face Sayako Fujita at GRACHAN 35 on May 27, 2018. Fujita won the fight by unanimous decision.

Park returned to Japan for her next fight, as she was scheduled to fight Emi Tomimatsu at DEEP 85 Impact on August 26, 2018. She notched her first professional victory, prevailing over Tomimatsu by unanimous decision.

Park faced Jae Choi at KAISER 02 in her fourth professional fight. Park extended her winning streak to two fights, winning once again by decision.

Deep Jewels Park was scheduled to fight Hikaru Aono at DEEP 93 Impact on December 15, 2019. She won the fight by a first-round technical knockout.

Park was next scheduled to face Saori Oshima at Deep Jewels 31 on December 19, 2020. Park won the closely contested bout by unanimous decision.

Park participated in the Deep Jewels atomweight Grand Prix, which was held to crown a new champion, as the title was left vacant after Tomo Maesawa retired. Park was scheduled to face Mizuki Oshiro in the tournament quarterfinals at Deep Jewels 32 on March 7, 2021. Park won the fight by unanimous decision, extending her winning streak to five fights. Advancing to the tournament semifinals, Park fought a rematch with Saori Oshima at Deep Jewels 33 on June 19, 2021. Although she managed to knock Oshima down midway through the first round, Oshima was able to snatch an armbar from the bottom, winning by way of submission.

Park was scheduled to face the undefeated Seika Izawa at DEEP 104 Impact on October 23, 2021. Park lost the fight by unanimous decision, with scores of 28-27, 29-26, 29-26. Fight Matrix ranked her as a top ten atomweight between January 3, 2021 and July 4, 2021, peaking at #5 in April 2021. She exited the rankings following her loss to Izawa.

Rizin FF Park faced the 2017 Rizin Women's Super Atomweight (49 kg) tournament runner-Up Rena Kubota at Rizin 33 - Saitama on December 31, 2021. Park won the fight by unanimous decision.

Park was expected to face Aira Koga at Deep Jewels 36 on March 12, 2022. The fight was later postponed for Deep Jewels 37 on April 9, 2022. Park won the fight by unanimous decision, with all three judges scoring the bout 30–27 in her favor.

2022 Super Atomweight Grand Prix Park faced the 2017 Rizin Women's Super Atomweight Grand Prix Winner Kanna Asakura at Rizin 37 - Saitama on July 31, 2022, in the quarterfinal bout of the Rizin Super Atomweight Grand Prix. Aside from the tournament title, a prize of ¥7,000,000 was on the line for the eventual winner as well. Park won the fight by a dominant unanimous decision.

Park faced the former two-time Rizin Super Atomweight Championship titleholder Ayaka Hamasaki in the tournament semifinals, which were held at Rizin 38 on September 25, 2022. She won the fight by unanimous decision.

Park rematched Seika Izawa in the final of the Rizin Super Atomweight Grand Prix on December 31, 2022 at Rizin 40. She lost the close bout via split decision.

Return to DEEP Park faced Namiko Kawabata at Deep Jewels 42 on September 10, 2023, winning the fight by unanimous decision.

Park faced Princess The Rocket at DEEP 117 Impact on December 10, 2023. She won the fight by a first-round technical knockout.

Park faced face Machi Fukuda for the interim Jewels Strawweight Championship at Deep Jewels 45 on May 26, 2024. She won the fight by a split decision.

The reigning Jewels Strawweight champion Seika Izawa formally vacated her title on July 11, 2025, after which Park was promoted to undisputed status. Park made her first title defense against Machi Fukuda at DEEP JEWELS 50 on September 7, 2025. She lost the fight by split decision.

Kickboxing career As an amateur kickboxer, Park captured gold medals at the 2012 WAKO Asian Championships and the 2013 Asian Indoor and Martial Arts Games, both times as an atomweight in the full contact category. Park made her professional kickboxing debut against Panchan Rina at REBELS 61 on June 9, 2019. Rina won the fight by unanimous decision.

Championships and accomplishments Jewels interim Jewels Strawweight Championship (One time; former) Jewels Strawweight Championship (One time; former)

Fight record Mixed martial arts record Win

Moeri Suda Decision (unanimous) Rizin Landmark 15

Hiroshima, Japan Win

Saki Kitamura TKO (punches) Deep Jewels 51

Tokyo, Japan Loss

Machi Fukuda Decision (split) Deep Jewels 50

Tokyo, Japan Win

Machi Fukuda Decision (split) Deep Jewels 45

Tokyo, Japan Win

Princess The Rocket TKO (knee and punches) DEEP 117 Impact

Tokyo, Japan Win

Namiko Kawabata Decision (unanimous) Deep Jewels 42

Tokyo, Japan Loss

Seika Izawa Decision (split) Rizin 40

Saitama, Japan Win

Ayaka Hamasaki Decision (unanimous) Rizin 38

Saitama, Japan Win

Kanna Asakura Decision (unanimous) Rizin 37

Saitama, Japan Win

Aira Koga Decision (unanimous) DEEP Cage Impact In Osaka 2022

Osaka, Japan Win

Rena Kubota Decision (unanimous) Rizin 33

Saitama, Japan Loss

Seika Izawa Decision (unanimous) DEEP 104 Impact

Tokyo, Japan Loss

Saori Oshima Technical Submission (armbar) Deep Jewels 33

Tokyo, Japan Win

Mizuki Oshiro Decision (unanimous) Deep Jewels 32

Tokyo, Japan Win

Saori Oshima Decision (unanimous) Deep Jewels 31

Tokyo, Japan Win

Hikaru Aono TKO (punches) DEEP 93 Impact

Tokyo, Japan Win

Choi Jae Decision (unanimous) KAISER 02

Andong, South Korea Win

Emi Tomimatsu Decision (unanimous) DEEP 85 Impact

Tokyo, Japan Loss

Sayako Fujita Decision (unanimous) Grachan 35 / 1MC Vol. 6

Tokyo, Japan Loss

Park Jeong-eun Decision (unanimous) Road FC 042 x Chungju World Martial Arts Festival

Chungju, South Korea

Kickboxing record