Boxers / Ryuko Ishii / Boxerbook rating

Ryuko Ishii: Boxerbook rating

Ryuko Ishii is #38 in the Boxerbook welterweight list with a rating of 1544 ± 183 from 10 counted bouts, as of Oct 13, 2026.

Rating1544 ± 183
Place#38 in Welterweight
Counted bouts10
Unknown opponents10 of 10
Schedule, career1100
Schedule, 36 months1100
Form, last 53.5 of 3.5
Data confidence0%
Statusactive · last bout Sep 21, 2026

Rating over time

high 1544 · low 1331May 2022Oct 2026

μ at the end of each month with a bout, and of every month while active. Red dot: latest.

Bouts behind the rating

Every counted bout, newest first: the change in μ it caused (green up, red down), its weight and the rating after it. Unknown opponents: 10 of 10 bouts.

W
Takumi Fukunaga (no page: counted as 1100)
Vacant Japanese youth welterweight title
Sep 21, 2026 · TKO 1/8 · weight ×1.05
+22
→ 1544
W
Marlon Pagalparan (no page: counted as 1100)
Jun 10, 2026 · TKO 1/8 · weight ×1.00
+25
→ 1522
W
Eien Fukumoto (no page: counted as 1100)
Dec 20, 2025 · TKO 5/5 · weight ×1.00
+29
→ 1497
W
Kadoka Darshan (no page: counted as 1100)
Nov 3, 2025 · TKO 1/5 · weight ×1.00
+35
→ 1469
W
Keisuke Murata (no page: counted as 1100)
Sep 18, 2025 · KO 1/4 · weight ×1.00
+44
→ 1434
W
Takumi Oke (no page: counted as 1100)
Nov 20, 2024 · TKO 1/4 · weight ×1.00
+58
→ 1390
L
Scorpion Kintaro (no page: counted as 1100)
Nov 3, 2022 · KO 3/4 · weight ×1.00
−191
→ 1331
W
Kota Hasegawa (no page: counted as 1100)
Sep 27, 2022 · TKO 2/4 · weight ×1.00
+50
→ 1523
W
Yuki Sugiyama (no page: counted as 1100)
Jul 28, 2022 · TKO 2/4 · weight ×1.00
+74
→ 1473
D
Ryuha Terada (no page: counted as 1100)
May 15, 2022 · MD 4/4 · weight ×0.80
−101
→ 1399

Publishers and Boxerbook

Consensus: not in the publishers’ top 15 in Welterweight (a list without them counts as 16).

WBC
not in top 15
WBA
not in top 15
IBF
not in top 15
WBO
not in top 15
Ring
not in top 15
TBRB
not in top 15
Boxerbook
#38

How the Boxerbook rating works · Ryuko Ishii: record and titles