Japan
Junki Sasaki
20-4-0 8 KO · 2009–2018
Junki Sasaki was a professional boxer from Japan, born Jun 14, 1991. Record 20-4-0 with 8 knockouts over 2009–2018. Junki Sasaki last fought Ryō Sagawa on Jun 2, 2018 and lost by SD over 8 rounds.
Also: 佐々木洵樹
BornJun 14, 1991
Country🇯🇵 Japan
StanceSouthpaw
DebutFeb 21, 2009
Career2009–2018
Rounds boxed135
KO share40%
Born inAsahikawa, Japan
Lives inTokyo, Japan
Boxerbook rating1507 ± 181 · inactive since Jun 2018Why here › Confirmed bouts22 of 24 · 22 official
Career record
Record
20-4-0, 8 KOs · 2009–2018
Last result
L
SD 8/8 · Korakuen Hall, Tokyo, 🇯🇵
The record
24 bouts, 2009–2018, newest first. Records under each bout are both boxers going in.
Bouts by source: English Wikipedia · 23, Wikipedia (ja) · 23, Japan Boxing Commission — 試合報告書 · 22
L
SD 8/8 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 20-3-0 · Sagawa 3-1-0
W
Ronnie Campos
UD 8/8 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 19-3-0 · Campos —
W
Sang Hoo Gil
TKO 5/8 · Susukino Mars Gym, Sapporo, 🇯🇵
Sasaki 18-3-0 · Gil —
W
Yudai Tamagawa
UD 8/8 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 17-3-0 · Tamagawa —
W
Panupong Anowan
KO 2/8 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 15-3-0 · Anowan —
W
Reiko Sugiyama
UD 8/8 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 15-3-0 · Sugiyama —
W
Choke Sawee Chamnanthan
KO 2/8 · Korakuen Hall, 🇯🇵
Sasaki 14-3-0 · Chamnanthan —
W
Yuki Kumazoe
UD 8/8 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 13-3-0 · Kumazoe —
L
UD 8/8 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 13-2-0 · Takenaka 11-3-1
W
Shingo Kusano
UD 8/8 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 12-2-0 · Kusano —
W
Kohei Maruoka
UD 8/8 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 11-2-0 · Maruoka —
L
Ryosei Arai
UD 8/8 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 11-1-0 · Arai —
W
Shingo Nagahama
TKO 6/8 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 10-1-0 · Nagahama —
W
Yoshinori Koto
TKO 8/8 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 9-1-0 · Koto —
W
Shinya Takahashi
UD 8/6 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 8-1-0 · Takahashi —
W
Ryoji Okahata
MD 6/6 · National Yoyogi Gymnasium No. 2, Yoyogi, 🇯🇵
Sasaki 7-1-0 · Okahata —
W
Atsuro Ito
TKO 2/6 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 6-1-0 · Ito —
W
Isao Sasaki
TKO 2/6 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 5-1-0 · Sasaki —
W
Yusuke Sekido
UD 4/4 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 4-1-0 · Sekido —
L
Yuki Iwasaki
SD 4/4 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 4-0-0 · Iwasaki —
Show all 24 bouts
W
Muneaki Hasumi
UD 4/4 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 3-0-0 · Hasumi —
W
Hiroyuki Sagehashi
UD 4/4 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 2-0-0 · Sagehashi —
W
Naoto Kawashita
UD 4/4 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 1-0-0 · Kawashita —
W
Hideshi Natsui
TKO 4/4 · Korakuen Hall, Tokyo, 🇯🇵
Sasaki 0-0-0 · Natsui —
Ratings now
Not in any current ranking.
World titles
No world title reigns recorded.
Facts
- What is Junki Sasaki's record?
- Junki Sasaki's professional record is 20-4-0 with 8 knockouts.
- Who did Junki Sasaki fight last?
- Junki Sasaki last fought Ryō Sagawa on Jun 2, 2018 and lost by SD over 8 rounds.
Sources
Boxerbook ID 222 · permanent link boxerbook.com/id/222. Wikidata (CC0), English Wikipedia (CC BY-SA), photo from the Instagram profile. Last fetched: 2026-10-12. Spot a mistake? Every bout page has a link to report it.