Jin Sasaki (佐々木尽, Sasaki Jin, born 28 July 2001) is a Japanese professional boxer. He has held the Oriental and Pacific Boxing Federation welterweight title since May 2026. Sasaki is also a former WBO-Asia Pacific super-lightweight champion.

Jin Sasaki
Personal information
Born佐々木尽
(2001-07-28) 28 July 2001 (age 24)
Height5 ft 8+12 in (174 cm)[1]
Weight
Boxing career
Reach69+14 in (176 cm)[1]
StanceOrthodox
Boxing record[2]
Total fights24
Wins21
Win by KO18
Losses2
Draws1

Amateur career

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He started boxing in his first year of junior high school and entered Hachioji Nakaya Gym, where he practiced two or three times a week, but after entering Hachioji Takuma High School, he devoted himself to boxing.[3] Sasaki went 1-3 as an amateur boxer.[4]

Professional career

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Sasaki had his debut fight on August 24, 2018, and won by technical knockout in the second round.[5]

Sasaki advanced to the 2019 East Japan Lightweight Rookie of the Year final, but abstained from the East Japan Lightweight Rookie of the Year final due to being unable to make weight.[citation needed]

On December 26, 2020, at "Kakeru Holdings presents A-SIGN.BOXING" held at the Sumida Ward General Gymnasium, he fought Aso Ishiwaki for the Japan Super Lightweight Youth Championship, and won by technical knockout in the third round in 2 minutes and 50 seconds.[6]

On July 17, 2021, he defended his title against Kaiki Yuba, the Japanese lightweight youth champion, at the Fujimori Gymnasium in Hachioji City, and won by knockout in the second round in 2 minutes and 3 seconds, successfully retaining the belt for the first time.[7] With this win, he qualified for the Japan Super Lightweight Championship.

On October 19, 2021, the Japanese and WBO-Asia Pacific super-lightweight championship match was held at Korakuen Hall, where he fought Andy Hiraoka, who was ranked 1st in Japan and 2nd in the WBO Asia-Pacific class. Sasaki was stopped in the 11th round in 1 minute 58 seconds. At the weigh-in the day before, Sasaki was overweight by 4 pounds and was disqualified from winning the title.[6]

On October 25, 2021, the Japan Boxing Commission (JBC) suspended Sasaki's license for 6 months after he missed weight for the second time, and collected 20% of the fight purse as a fine.[8]

On July 9, 2022, at Esforta Arena Hachioji, Sasaki fought Kotaro Sekine. The fight ended in a draw, where both fighters were knocked down.[9]

On January 14, 2023, Sasaki fought for the vacant WBO Asia-Pacific welterweight title at Korakuen Hall, defeating champion Ryota Toyoshima by TKO in the first round in 1 minute and 56 seconds.[10]

Sasaki won by unanimous decision against Shoki Sakai at Ariake Arena in Tokyo, Japan on January 24, 2025.[11]

Sasaki was knocked out by Brian Norman Jr. at the WBO welterweight title match at Ota City General Gymnasium in Tokyo on June 19, 2025.[12][13]

He challenged Oriental and Pacific Boxing Federation welterweight champion Sora Tanaka at the Tokyo Dome on 2 May 2026, winning via split decision.[14][15]

Professional boxing record

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24 fights 21 wins 2 losses
By knockout 18 2
By decision 3 0
Draws 1
No. Result Record Opponent Type Round, time Date Location Notes
24 Win 21–2–1 Sora Tanaka SD 10 2 May 2026 Tokyo Dome, Tokyo, Japan Won OPBF welterweight title
23 Win 20–2–1 Marlon Pagalpalan TKO 2 (8), 1:21 19 Feb 2026 Korakuen Hall, Tokyo, Japan
22 Loss 19–2–1 Brian Norman Jr. KO 5 (12), 0:46 19 Jun 2025 Ota City General Gymnasium, Tokyo, Japan For WBO welterweight title
21 Win 19–1–1 Shoki Sakai UD 12 24 Jan 2025 Ariake Arena, Tokyo, Japan Retained WBO Asia Pacific and OPBF welterweight titles
20 Win 18–1–1 Qamil Balla TKO 7 (12), 0:52 3 Sep 2024 Ariake Arena, Tokyo, Japan Retained WBO Asia Pacific and OPBF welterweight titles
19 Win 17–1–1 Joe Noynay TKO 5 (12), 0:43 16 May 2024 Korakuen Hall, Tokyo, Japan Retained WBO Asia Pacific welterweight title;
Won vacant OPBF welterweight title
18 Win 16–1–1 Hiroto Hoshi TKO 11 (12), 1:44 8 Jul 2023 Ésforta Arena Hachiōji, Hachioji, Japan Retained WBO Asia Pacific welterweight title
17 Win 15–1–1 Keita Obara TKO 3 (12), 1:13 8 Apr 2023 Ariake Arena, Tokyo, Japan Retained WBO Asia Pacific welterweight title
16 Win 14–1–1 Ryota Toyoshima TKO 1 (12), 1:56 14 Jan 2023 Korakuen Hall, Tokyo, Japan Won vacant WBO Asia Pacific welterweight title
15 Win 13–1–1 Phatiphan Krungklang TKO 3 (8), 2:31 15 Nov 2022 Korakuen Hall, Tokyo, Japan
14 Draw 12–1–1 Kotaro Sekine MD 6 9 Jul 2022 Ésforta Arena Hachiōji, Hachioji, Japan
13 Win 12–1 Marcus Smith TKO 5 (8), 2:49 22 Apr 2022 Korakuen Hall, Tokyo, Japan
12 Loss 11–1 Andy Hiraoka TKO 11 (12), 1:58 19 Oct 2021 Korakuen Hall, Tokyo, Japan For vacant Japanese and vacant WBO Asia Pacific super lightweight titles
11 Win 11–0 Kaiki Yuba KO 2 (8), 2:03 17 Jul 2021 Fujimori Gym, Hachioji, Japan Retained Japanese Youth super lightweight title
10 Win 10–0 Aso Ishiwaki TKO 3 (8), 2:50 26 Dec 2020 Sumida City Gymnasium, Tokyo, Japan Won vacant Japanese Youth super lightweight title
9 Win 9–0 Tatsuya Miyazaki TKO 1 (6), 2:53 23 Nov 2020 Shinjuku FACE, Tokyo, Japan
8 Win 8–0 Shun Akaiwa KO 1 (6), 0:45 31 Aug 2020 Shinjuku FACE, Tokyo, Japan
7 Win 7–0 Tetsuya Kondo TKO 1 (4), 2:36 26 Sep 2019 Korakuen Hall, Tokyo, Japan
6 Win 6–0 Hikaru Sato UD 4 6 Aug 2019 Korakuen Hall, Tokyo, Japan
5 Win 5–0 Vageta Ishikawa TKO 3 (4), 1:36 11 Jun 2019 Korakuen Hall, Tokyo, Japan
4 Win 4–0 Sirisak Pimpasitta KO 2 (4), 0:56 21 Apr 2019 Meenayothin Camp, Bangkok, Thailand
3 Win 3–0 Naoyuki Tsumoto TKO 1 (4), 2:02 8 Feb 2019 Korakuen Hall, Tokyo, Japan
2 Win 2–0 Ryo Kasai KO 3 (4), 0:33 7 Nov 2018 Korakuen Hall, Tokyo, Japan
1 Win 1–0 Tsuyoshi Kato TKO 2 (4), 1:55 24 Aug 2018 Korakuen Hall, Tokyo, Japan

References

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  1. 1 2 Top Rank Boxing tale of the tape prior to the Brian Norman Jr. fight.
  2. "Boxing record for Jin Sasaki". BoxRec.
  3. "高3佐々木尽「失神させMVP」東日本新人王決勝へ - ボクシング : 日刊スポーツ". nikkansports.com.
  4. "佐々木 尽(Jin Sasaki)". ボクシング 選手名鑑 -戦績一覧- -戦歴一覧-. March 21, 2019.
  5. "日本ボクシングコミッション(JBC)". www.jbc.or.jp. Archived from the original on 2022-09-29. Retrieved 2023-04-08.
  6. 1 2 "Ryo Ako is still strong! 19-year-old Jin Sasaki won the Japan Youth Championship by KO with two TKO wins". boxingnews.jp. 2020-12-26. Retrieved 2023-05-04.
  7. "Youth showdown incandescence! Hitsuji Sasaki dramatically wins twice by KO, and Kaiki Yuba is knocked down twice but allows a comeback". boxingnews-jp. 2021-07-17. Retrieved 2023-05-04.
  8. "佐々木尽はライセンス停止6カ月…JBCが体重超過2選手の処分発表 - スポニチ Sponichi Annex 格闘技". スポニチ Sponichi Annex.
  9. "Jin Sasaki draws with Kotaro Sekine and Taniguchi Taniguchi becomes the Japan Youth Super Featherweight Champion". boxingnews-jp. 2022-07-09. Retrieved 2023-05-04.
  10. karlfreitag (2023-01-15). "Boxing News: Sasaki upsets Toyoshima, wins WBO AP 147lb belt » May 4, 2023". fightnews.com. Retrieved 2023-05-04.
  11. Iskenderov, Parviz (14 January 2025). "Jin Sasaki vs Shoki Sakai tops Inoue-Kim undercard". FIGHTMAG.
  12. Iskenderov, Parviz (25 April 2025). "Brian Norman Jr faces Jin Sasaki in Tokyo in June". FIGHTMAG.
  13. Alyas Blanco, Johan (23 April 2025). "Brian Norman Jr To Defend WBO Title In Japan, Won't Wait For Jaron Ennis". KO On SI.
  14. "Lucky boy: Jin Sasaki claims controversial win over Sora Tanaka in Tokyo". Boxing Scene. Retrieved 3 May 2026.
  15. "Sasaki Edges Tanaka, Wins OPBF 147lb Belt". fightnews.com. Retrieved 3 May 2026.