Welterweight · Japan
Jin Sasaki 22-2-1 19 KO · 2018–2026
Photo: あかさななた, CC0 via Wikimedia Commons
Jin Sasaki is a welterweight boxer from Japan. Record 22-2-1 with 19 knockouts over 2018–2026. Jin Sasaki last fought Kavuma Ssemujju on Sep 21, 2026 and won by KO in round 6 of 10.
Also: 佐々木尽
Born —
Country 🇯🇵 Japan
Debut Aug 24, 2018
Career 2018–2026
Rounds boxed 110
KO share 86%
Titles WBO Asia Pacific and Japanese welterweight titles 2026
Boxerbook rating #21 in Welterweight · 1943 ± 119Why here › Confirmed bouts 23 of 25 · 23 official
Record and next fight Record
22-2-1, 19 KOs · 2018–2026
Next fight
No next fight confirmed
Last result W
Won WBO Asia Pacific and Japanese welterweight titles KO 6/10 · Tokyo Tama Future Messe, Hachioji, 🇯🇵
The record 25 bouts, 2018–2026, newest first. Records under each bout are both boxers going in.
Bouts by source: Wikipedia (ja) · 25, Japan Boxing Commission — 試合報告書 · 23, English Wikipedia · 6
W
Won WBO Asia Pacific and Japanese welterweight titles KO 6/10 · Tokyo Tama Future Messe, Hachioji, 🇯🇵
Sasaki 21-2-1 · Ssemujju 9-1-1
W
SD 10/10 · Tokyo Dome, 🇯🇵
Sasaki 20-2-1 · Tanaka 5-0-0
W
Marlon Paniamogan
TKO 2/8 · Korakuen Hall, 🇯🇵
Sasaki 19-2-1 · Paniamogan —
L
For WBO welterweight title KO 5/12 · Ota Ward General Gymnasium, Tokyo, 🇯🇵
Sasaki 19-1-1 · Norman Jr. 28-0-0
W
WBO Asia Pacific title, 5th defence UD 12/12 · Ariake Arena, 🇯🇵
Sasaki 18-1-1 · Sakai 29-14-3
W
For WBO Asia Pacific and OPBF welterweight titles TKO 7/12 · Ariake Arena, Tokyo, 🇯🇵
Sasaki 17-1-1 · Balla 15-1-1
W
For WBO Asia Pacific and vacant OPBF welterweight title TKO 5/12 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 16-1-1 · Noynay 23-3-2
W
Taito Hoshi
WBO Asia Pacific title, 2nd defence TKO 11/12 · Esforta Arena Hachioji, 🇯🇵
Sasaki 15-1-1 · Hoshi —
W
For WBO Asia Pacific welterweight title TKO 3/12 · Ariake Arena, Tokyo, 🇯🇵
Sasaki 14-1-1 · Obara 26-4-1
W
WBO Asia Pacific welterweight title TKO 1/12 · Korakuen Hall, 🇯🇵
Sasaki 13-1-1 · Toyoshima 16-2-1
W
Patiparn Kronglarn
TKO 3/8 · Korakuen Hall, 🇯🇵
Sasaki 12-1-1 · Kronglarn —
D
MD 6/6 · Esforta Arena Hachioji, 🇯🇵
Sasaki 12-1-0 · Sekine 3-0-0
W
Marcus Smith
TKO 5/8 · Korakuen Hall, 🇯🇵
Sasaki 11-1-0 · Smith —
L
For vacant Japanese and vacant WBO Asia Pacific super lightweight titles TKO 11/12 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 11-0-0 · Hiraoka 17-0-0
W
Japanese youth super lightweight title KO 2/8 · Hachioji City Fujimori Gymnasium, 🇯🇵
Sasaki 10-0-0 · Yuba 7-0-2
W
Asao Ishiwaki
Vacant Japanese youth super lightweight title TKO 3/8 · Sumida Ward General Gymnasium, 🇯🇵
Sasaki 9-0-0 · Ishiwaki —
W
Tatsuya Miyazaki
KO 1
Sasaki 8-0-0 · Miyazaki —
W
Shun Akaiwa
KO 1/6 · Shinjuku Face, 🇯🇵
Sasaki 7-0-0 · Akaiwa —
W
Tetsuya Kondo
TKO 1/4 · Korakuen Hall, 🇯🇵
Sasaki 6-0-0 · Kondo —
W
Hikari Sato
UD 4/4 · Korakuen Hall, 🇯🇵
Sasaki 5-0-0 · Sato —
Show all 25 bouts W
Vegeta Ishikawa
TKO 3/4 · Korakuen Hall, 🇯🇵
Sasaki 4-0-0 · Ishikawa —
W
Sirisak Pinpasit
KO 2
Sasaki 3-0-0 · Pinpasit —
W
Naoyuki Tsumoto
TKO 1/4 · Korakuen Hall, 🇯🇵
Sasaki 2-0-0 · Tsumoto —
W
Ryo Kasai
KO 3/4 · Korakuen Hall, 🇯🇵
Sasaki 1-0-0 · Kasai —
W
Takeshi Kato
TKO 2/4 · Korakuen Hall, 🇯🇵
Sasaki 0-0-0 · Kato —
Ratings now Not in any current ranking.
World titles No world title reigns recorded.
Facts
What is Jin Sasaki's record? Jin Sasaki's professional record is 22-2-1 with 19 knockouts.
When is Jin Sasaki's next fight? No next fight is confirmed as of 17 Oct 2026.
Who did Jin Sasaki fight last? Jin Sasaki last fought Kavuma Ssemujju on Sep 21, 2026 and won by KO in round 6 of 10. Sources Boxerbook ID 20593 · permanent link boxerbook.com/id/20593 . Wikidata (CC0), English Wikipedia (CC BY-SA), photo from Wikimedia Commons. Last fetched: 2026-10-12. Spot a mistake? Every bout page has a link to report it.
