Yoshio Shirai
46–8 · 52 recorded bouts · 1943–1955
46–8–4
Yoshio Shirai finished 39% of 46 wins inside the distance — the 36th percentile for flyweight boxing, where the median is 47%. No reach is on record, so this page compares record rather than measurements.
SOURCE·Yoshio Shirai — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-25
How this record is compiled
- Measurements come from the fighter's English Wikipedia infobox; the bout list is parsed from the results table on the same article, read on 2026-07-25. Boxing tables are read by header name and MMA records by the fixed column order of the
MMA recordtemplate — two different parsers, because reading MMA rows as a boxing table returns a fighter's boxing record in place of their real one. - A bout enters the ledger with whatever fields the source states: result, opponent, method, round, year. Any field the source leaves empty stays empty here. A date that cannot be established is left blank rather than inferred, and the bout is still counted.
- A no contest is counted and printed as a no contest. It is never folded into the wins, the losses or the draws, and it never disappears to make a total balance.
- Where the article's infobox total disagrees with its own results table, both figures are published and each is labelled with where it came from. Nothing is averaged and nothing is reconciled against a second database.
- Percentiles rank this fighter among the 168 flyweight boxing fighters in the dataset — the most specific group of at least 30 that this fighter belongs to.
Bout record
Every bout the article's own results table lists, in order. A dash is a field the source leaves empty — it is not a zero and it is not a guess.
| Year | Result | Opponent | Method | Rd |
|---|---|---|---|---|
| 1955 | L | Pascual Pérez | KO/TKO | 5 |
| 1954 | L | Pascual Pérez | Decision | 15 |
| 1954 | W | Takashi Seno | KO/TKO | 4 |
| 1954 | W | Alberto Barenghi | Decision | 10 |
| 1954 | W | Leo Espinosa | Decision | 15 |
| 1954 | W | Masaru Kaneko | KO/TKO | 8 |
| 1953 | W | Terry Allen | Decision | 15 |
| 1953 | L | Leo Espinosa | KO/TKO | 7 |
| 1953 | W | Vic Herman | KO/TKO | 10 |
| 1953 | W | Tanny Campo | Decision | 15 |
| 1953 | W | Mario Macias | Decision | 10 |
| 1952 | W | Dado Marino | Decision | 15 |
| 1952 | W | Roy Higa | Decision | 10 |
| 1952 | W | Kyoichi Muto | KO/TKO | 6 |
| 1952 | W | Hiroshi Horiguchi | Decision | 10 |
| 1951 | W | Dado Marino | KO/TKO | 7 |
| 1951 | W | Takahisa Horiguchi | KO/TKO | 6 |
| 1951 | W | Hidemasa Nagashima | Decision | 10 |
| 1951 | W | Yukio Takahashi | DQ | 7 |
| 1950 | W | Takashi Seno | Decision | 10 |
| 1950 | W | Katsumi Kobayashi | KO/TKO | 2 |
| 1950 | W | Hideo Kijima | KO/TKO | 2 |
| 1950 | W | Yoichiro Hanada | Decision | 10 |
| 1950 | W | Yoshiaki Nario | Decision | 8 |
| 1949 | W | Hiroshi Horiguchi | Decision | 10 |
| 1949 | W | Kyoichi Muto | KO/TKO | 3 |
| 1949 | W | Noboru Kushida | Decision | 10 |
| 1949 | W | Eijiro Yajima | Decision | 10 |
| 1949 | W | Tomoyoshi Yanagida | KO/TKO | 2 |
| 1949 | W | Yoichiro Hanada | KO/TKO | 5 |
| 1948 | W | Noboru Kushida | Decision | 8 |
| 1948 | W | Eijiro Yajima | Decision | 8 |
| 1948 | W | Nobuyuki Ishimori | KO/TKO | 2 |
| 1948 | W | Kiyoshi Nishimura | Decision | 8 |
| 1948 | D | Kunimatsu Suda | Decision | 6 |
| 1948 | W | Sadaji Wada | Decision | 8 |
| 1948 | W | Kazumi Ueda | Decision | 6 |
| 1947 | W | Michiyosi Koizumi | KO/TKO | 2 |
| 1947 | D | Takeshi Makino | Decision | 8 |
| 1947 | L | Eijiro Yajima | Decision | 8 |
| 1947 | L | Yoichiro Hanada | Decision | 8 |
| 1947 | W | Toshimitsu Kushihashi | Decision | 6 |
| 1947 | W | Kazumi Ueda | Decision | 6 |
| 1946 | L | Noboru Kushida | KO/TKO | 5 |
| 1944 | W | Sakae Suzuki | KO/TKO | 1 |
| 1944 | W | Sadasuke Aoki | Decision | 4 |
| 1944 | W | Shigeo Tanaka | Decision | 4 |
| 1944 | W | Makoto Yamada | KO/TKO | 1 |
| 1944 | W | Masao Ito | KO/TKO | 1 |
| 1943 | W | Tomisaburo Oura | Decision | 4 |
| 1943 | W | Saichi Kubota | KO/TKO | 1 |
| 1943 | W | Jumpo Umiyama | KO/TKO | 1 |
5 of these opponents have their own page here.
SOURCE·Yoshio Shirai — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-25
What is on record
| Reach | not recorded | |
|---|---|---|
| Height | not recorded | |
| Stance | Orthodox | |
| Division | Flyweight Boxing | |
| Most active decade | 1940s — 28 of 52 dated bouts | |
| Country | Japan |
Wikipedia carries no reach figure for Yoshio Shirai, so the reach-advantage comparison this site is built on cannot be computed. Everything below comes from the record instead.
Record
Boxing record
46–8
58 bouts on record
Finish rate
39%
of wins ended inside the distance — flyweight boxing median 47%, 36th percentile
The career, bout by bout
52 recorded bouts from 1943 to 1955. Every incumbent shows this as a table you have to read; here it is as a shape you can see.
Career span
13y
1943–1955
Longest unbeaten run
28
without a loss — draws do not break it
Busiest year
1948
7 bouts
Recorded bouts
52
52 with a date
What this record does and does not say
- What is Yoshio Shirai's record?
- 46–8–4 in boxing. That is the aggregate stated in the English Wikipedia infobox; the results table on the same article lists 52 bouts individually.
- Does a no contest change a record here?
- No. A no contest is not a win, a loss or a draw, and it is never folded into one. It is counted and printed separately, so a 20–0 record with two no contests is shown as exactly that rather than as 22–0 or as 20–0 with the no contests dropped. The same applies to a bout overturned after the fact where the source records the change.
- What happens when sources disagree about a fight?
- This site publishes one source — the fighter's English Wikipedia article, read on the date printed under every table — and it does not silently reconcile that against anyone else's database. Where the article's own infobox total and its own results table disagree, both are shown and the page says which one each figure came from. Nothing is averaged, and no field is filled in from a second source to make a total balance.
Where this record leads
The 170 flyweight boxing fighters this record is ranked against, and the distribution Shirai sits inside.
170 FIGHTERS 1940s boxing28 of these bouts fall in the 1940s. This is what the rest of that decade's records look like.
36 FIGHTERS Pascual Pérez vs Yoshio ShiraiA bout both records confirm — set out side by side, with every opponent the two men have in common.
HEAD TO HEAD Longest unbeaten runsYoshio Shirai went 28 without a loss. This is where that sits against every run on the site.
LEADERBOARD