H&G All-Time Index v2.0.0 country leaderboard

Best Japan boxers of all time

Naoya Inoue leads the Score list, with Kenshiro Teraji and Shinsuke Yamanaka close enough to make the order worth arguing about.

Japan appears here because the profile export has enough reliable country rows to build a public leaderboard without guessing missing nationality data.

Country pages are only generated where the profile export has at least five reliable country rows. Missing country metadata is not guessed.

H&G All-Time Index v2.0.0 public leaderboard. These visual leaderboards are built from the published men's release and should be read with the methodology, versions and corrections notes.

Rankings: H&G All-Time Index v2.0.0. Reflects fights up to 10 May 2026, the most recent on record. The ratings are fixed to that point, so fights after it are not yet included.

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24 fighters shown from the H&G All-Time Index v2.0.0 launch leaderboard set.

#1Naoya InoueScore: 99.94Compare in head-to-head

#154Kenshiro TerajiScore: 81.70Compare in head-to-head

#159Shinsuke YamanakaScore: 81.49Compare in head-to-head

#170Junto NakataniScore: 81.17Compare in head-to-head

#179Hozumi HasegawaScore: 80.97Compare in head-to-head

#195Kazuto IokaScore: 80.50Compare in head-to-head

#202Masamori TokuyamaScore: 80.25Compare in head-to-head

#268Toshiaki NishiokaScore: 78.52Compare in head-to-head

#297Kosei TanakaScore: 77.79Compare in head-to-head

#321Daisuke NaitoScore: 77.53Compare in head-to-head

Readable table

Best Japan boxers of all time, H&G All-Time Index v2.0.0
Rank	Fighter	Division	Score	Peak-form Elo	Active	Notable wins	Compare
#1	Naoya Inoue	Super Bantamweight	99.94	2,235	2012-2026	No listed opponent summary	Head-to-head
#154	Kenshiro Teraji	Flyweight	81.70	1,954	2014-2025	No listed opponent summary	Head-to-head
#159	Shinsuke Yamanaka	Bantamweight	81.49	1,986	2006-2018	No listed opponent summary	Head-to-head
#170	Junto Nakatani	Bantamweight	81.17	2,054	2015-2026	No listed opponent summary	Head-to-head
#179	Hozumi Hasegawa	Bantamweight	80.97	1,935	1999-2016	No listed opponent summary	Head-to-head
#195	Kazuto Ioka	Super Flyweight	80.50	1,969	2009-2026	No listed opponent summary	Head-to-head
#202	Masamori Tokuyama	Super Flyweight	80.25	1,926	1994-2006	No listed opponent summary	Head-to-head
#268	Toshiaki Nishioka	Super Bantamweight	78.52	1,962	1994-2012	No listed opponent summary	Head-to-head
#297	Kosei Tanaka	Super Flyweight	77.79	1,893	2013-2024	No listed opponent summary	Head-to-head
#321	Daisuke Naito	Flyweight	77.53	1,932	1996-2010	No listed opponent summary	Head-to-head
#457	Koki Kameda	Bantamweight	75.63	1,908	2003-2015	No listed opponent summary	Head-to-head
#481	Tomoki Kameda	Bantamweight	75.43	1,879	2008-2025	No listed opponent summary	Head-to-head
#486	Takuma Inoue	Bantamweight	75.38	1,968	2013-2026	No listed opponent summary	Head-to-head
#487	Takahiro Ao	Super Featherweight	75.38	1,871	2003-2018	No listed opponent summary	Head-to-head
#495	Fighting Harada	Bantamweight	75.30	1,742	1960-1970	No listed opponent summary	Head-to-head
#510	Yota Sato	Super Flyweight	75.09	1,909	2004-2013	No listed opponent summary	Head-to-head
#598	Takashi Miura	Super Featherweight	74.10	1,850	2003-2017	No listed opponent summary	Head-to-head
#640	Hiroshi Kawashima	Super Flyweight	73.74	1,785	1988-1997	No listed opponent summary	Head-to-head
#652	Akira Yaegashi	Flyweight	73.64	1,806	2005-2019	No listed opponent summary	Head-to-head
#709	Takashi Uchiyama	Super Featherweight	73.13	1,894	2005-2016	No listed opponent summary	Head-to-head
#721	Masamichi Yabuki	Flyweight	73.06	1,872	2016-2025	No listed opponent summary	Head-to-head
#823	Ryosuke Iwasa	Super Bantamweight	72.23	1,850	2008-2023	No listed opponent summary	Head-to-head
#869	Ryo Akaho	Bantamweight	71.86	1,913	2005-2022	No listed opponent summary	Head-to-head
#996	Hiroto Kyoguchi	Light Flyweight	70.85	1,818	2016-2025	No listed opponent summary	Head-to-head

Read this with care

H&G All-Time Index v2.0.0 is a fixed public release, not a live database. A fighter can top one of these lists and still rank lower overall. The all-time score blends several things: how good they were in their fights, how far ahead of their rivals they stood, how tough their opponents were, their title record, and how long they stayed near the top.

For disputed placements, use the fighter page, methodology page and corrections process rather than treating one number as the whole argument.

Open the Rating Timeline See when boxers peaked What the Index means by greatness