Boxers / Royal Kobayashi / Boxerbook rating

Royal Kobayashi: Boxerbook rating

Royal Kobayashi has a Boxerbook rating of 1544 ± 267 from 45 counted bouts, as of Oct 13, 2026. Not in a division list: inactive since Oct 1981 (no bout for 12 months).

Rating1544 ± 267
Placenot listed
Counted bouts45
Unknown opponents37 of 45
Schedule, career1188
Schedule, 36 monthsno bouts
Form, last 51.6 of 3.5
Data confidence11%
Statusinactive since Oct 1981

Rating over time

high 1875 · low 1544Feb 1973Sep 1982

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: 37 of 45 bouts.

L
Jung Han Hwang (no page: counted as 1100)
Lost OPBF featherweight title
Oct 18, 1981 · KO 1/12 · weight ×1.16
−49
→ 1544
L
Young Se Oh (no page: counted as 1100)
Sep 6, 1981 · UD 12/12 · weight ×1.10
−49
→ 1593
W
Dae Hwan Lee (no page: counted as 1100)
Retained OPBF featherweight title
May 19, 1981 · PTS 12/12 · weight ×1.16
+6
→ 1642
W
Koichi Matsushima (no page: counted as 1100)
Retained OPBF featherweight title
Jan 25, 1981 · KO 8/12 · weight ×1.16
+6
→ 1636
W
Dae Hwan Lee (no page: counted as 1100)
Retained OPBF featherweight title
Aug 19, 1980 · SD 12/12 · weight ×1.16
+6
→ 1629
W
Takao Maruki (no page: counted as 1100)
Retained OPBF featherweight title
Jun 9, 1980 · KO 6/12 · weight ×1.16
+7
→ 1623
W
Masa Ito (no page: counted as 1100)
Feb 24, 1980 · KO 7/10 · weight ×1.05
+6
→ 1616
W
Kashi Keno (no page: counted as 1100)
Dec 20, 1979 · KO 6/10 · weight ×1.05
+6
→ 1610
W
Suk Tae Yun (no page: counted as 1100)
Retained OPBF featherweight title
Oct 28, 1979 · UD 12/12 · weight ×1.16
+7
→ 1604
W
Chong Yun Lee (no page: counted as 1100)
Sep 8, 1979 · KO 5/10 · weight ×1.05
+7
→ 1597
L
Hikaru Tomonari (no page: counted as 1100)
Jul 26, 1979 · MD 10/10 · weight ×1.05
−45
→ 1590
W
Bok Soo Hwang (no page: counted as 1100)
Retained OPBF featherweight title
Apr 27, 1979 · PTS 12/12 · weight ×1.16
+6
→ 1635
L
Eusebio Pedroza
For WBA featherweight title
Jan 9, 1979 · RTD 13/15 · weight ×1.65 · opponent 1753
−43
→ 1629
W
Spider Nemoto
Retained OPBF featherweight title
Aug 6, 1978 · SD 12/12 · weight ×1.16 · opponent 1613
+33
→ 1671
W
Bok Soo Hwang (no page: counted as 1100)
Won OPBF featherweight title
Apr 27, 1978 · TKO 10/12 · weight ×1.16
+7
→ 1639
L
Wilfredo Gómez
For WBC super bantamweight title
Jan 19, 1978 · KO 3/15 · weight ×1.65 · opponent 1885
−30
→ 1631
W
Toshi Nakai (no page: counted as 1100)
Nov 23, 1977 · TKO 1 · weight ×1.00
+7
→ 1661
W
Satoshi Nakai (no page: counted as 1100)
Nov 3, 1977 · TKO 1/10 · weight ×1.05
+7
→ 1661
W
Shigeru Sasaki (no page: counted as 1100)
May 23, 1977 · KO 1/10 · weight ×1.05
+7
→ 1647
W
Blazer Okubo (no page: counted as 1100)
Feb 8, 1977 · KO 7/10 · weight ×1.05
+8
→ 1640
Show all 45 counted bouts
L
Yum Dong-kyun
Lost WBC super bantamweight title
Nov 24, 1976 · MD 15/15 · weight ×1.65 · opponent 1302
−116
→ 1632
W
Rigoberto Riasco
Won WBC super-bantamweight title
Oct 9, 1976 · KO 8/15 · weight ×1.65 · opponent 1574
+55
→ 1748
W
Jaguar Sekino (no page: counted as 1100)
Jul 10, 1976 · TKO 5/10 · weight ×1.05
+8
→ 1693
L
Emilio Salcedo (no page: counted as 1100)
Feb 15, 1976 · UD 10/10 · weight ×1.05
−82
→ 1684
W
Harada Ushiwakamaru
Dec 21, 1975 · UD 10/10 · weight ×1.05 · opponent 1301
+10
→ 1766
L
Alexis Argüello
For WBA & The Ring featherweight titles
Oct 12, 1975 · KO 5/15 · weight ×1.65 · opponent 1824
−118
→ 1757
W
Hwa Ryong Yuh (no page: counted as 1100)
Jun 16, 1975 · KO 4/10 · weight ×1.05
+6
→ 1875
W
Zensuke Utagawa (no page: counted as 1100)
May 9, 1975 · KO 2/12 · weight ×1.10
+7
→ 1869
W
Jun Gallego (no page: counted as 1100)
Apr 4, 1975 · KO 9/10 · weight ×1.05
+7
→ 1862
W
Masanao Toyoshima (no page: counted as 1100)
Feb 17, 1975 · KO 6/10 · weight ×1.05
+7
→ 1855
W
Sanjo Takemori (no page: counted as 1100)
Dec 30, 1974 · KO 2/10 · weight ×1.05
+8
→ 1848
W
Bert Nabalatan (no page: counted as 1100)
Sep 16, 1974 · UD 10/10 · weight ×1.05
+8
→ 1840
W
Ryu Fukita (no page: counted as 1100)
Sep 5, 1974 · KO 4/10 · weight ×1.05
+8
→ 1840
W
Freddie Mensah (no page: counted as 1100)
Aug 4, 1974 · KO 7/10 · weight ×1.05
+9
→ 1824
W
José Medel
Jun 9, 1974 · RTD 6/10 · weight ×1.05 · opponent 1491
+38
→ 1815
W
Sung Jong Hong (no page: counted as 1100)
Mar 17, 1974 · KO 3/10 · weight ×1.05
+13
→ 1777
W
Hiroshi Nunose (no page: counted as 1100)
Feb 1, 1974 · KO 4/10 · weight ×1.05
+14
→ 1764
W
Jaguar Sekino (no page: counted as 1100)
Nov 23, 1973 · KO 2/10 · weight ×1.05
+16
→ 1750
W
Nam Chul Chung (no page: counted as 1100)
Oct 19, 1973 · KO 5/10 · weight ×1.05
+18
→ 1734
W
Katsutoshi Inuzuka (no page: counted as 1100)
Sep 7, 1973 · KO 5/10 · weight ×1.05
+20
→ 1716
W
Victor Dounue (no page: counted as 1100)
Jul 21, 1973 · KO 7/10 · weight ×1.05
+24
→ 1695
W
Hiroshi Miura (no page: counted as 1100)
Jun 15, 1973 · KO 2/10 · weight ×1.05
+29
→ 1672
W
Gypsy Sato (no page: counted as 1100)
Apr 27, 1973 · KO 2/8 · weight ×1.00
+34
→ 1643
W
Baron Kumazawa (no page: counted as 1100)
Feb 25, 1973 · PTS 8/8 · weight ×1.00
+55
→ 1609
W
Baron Kumasawa (no page: counted as 1100)
Feb 15, 1973 · DEC 8/8 · weight ×1.00
+55
→ 1609

Publishers and Boxerbook

Consensus: no publisher lists for the division (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
not listed

How the Boxerbook rating works · Royal Kobayashi: record and titles