Chang Jung-koo
38–4 · 42 recorded bouts · 1980–1991
38–4
Chang Jung-koo finished 45% of 38 wins inside the distance — the 37th percentile for light flyweight boxing, where the median is 53%. No reach is on record, so this page compares record rather than measurements.
SOURCE·Chang Jung-koo — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-07
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 2026-07-07. 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 103 light 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 |
|---|---|---|---|---|
| 1991 | L | Muangchai Kittikasem | KO/TKO | 12 |
| 1991 | L | Sot Chitalada | Decision | 12 |
| 1990 | W | Ric Siodora | KO/TKO | 8 |
| 1989 | L | Humberto Gonzalez | Decision | 12 |
| 1989 | W | Amando Velasco | Decision | 10 |
| 1988 | W | Hideyuki Ohashi | KO/TKO | 8 |
| 1987 | W | Isidro Perez | Decision | 12 |
| 1987 | W | Agustin Garcia | KO/TKO | 10 |
| 1987 | W | Efren Pinto | KO/TKO | 6 |
| 1986 | W | Hideyuki Ohashi | KO/TKO | 5 |
| 1986 | W | Francisco Montiel | Decision | 12 |
| 1986 | W | German Torres | Decision | 12 |
| 1985 | W | Jorge Cano | Decision | 12 |
| 1985 | W | Francisco Montiel | Decision | 12 |
| 1985 | W | German Torres | — | 12 |
| 1984 | W | Tadashi Kuramochi | Decision | 12 |
| 1984 | W | Katsuo Tokashiki | KO/TKO | 9 |
| 1984 | W | Sot Chitalada | Decision | 12 |
| 1983 | W | German Torres | Decision | 12 |
| 1983 | W | Masaharu Inami | KO/TKO | 2 |
| 1983 | W | Hilario Zapata | KO/TKO | 3 |
| 1983 | W | Tio Abella | KO/TKO | 2 |
| 1982 | W | Rodrigo Saony | Decision | 10 |
| 1982 | L | Hilario Zapata | — | 15 |
| 1982 | W | Amado Ursua | Decision | 10 |
| 1982 | W | Lukodd Phitiporn | KO/TKO | 5 |
| 1982 | W | Jong Kwan Chang | — | 6 |
| 1981 | W | Alfonso Lopez | KO/TKO | 3 |
| 1981 | W | Chutmongkol Thairungriang | KO/TKO | 2 |
| 1981 | W | Leonardo Paredes | KO/TKO | 6 |
| 1981 | W | Lord Esmero | — | 10 |
| 1981 | W | Oscar Bolivar | Decision | 10 |
| 1981 | W | Miguel Leal | Decision | 10 |
| 1981 | W | Yo Dong Kim | Decision | 6 |
| 1981 | W | Chang Pyo Hong | Decision | 8 |
| 1981 | W | Jin Hyung Park | KO/TKO | 2 |
| 1980 | W | Nam Keun Kang | Decision | 6 |
| 1980 | W | Hi Suo Shin | Decision | 4 |
| 1980 | W | Ho Chul Pyun | Decision | 4 |
| 1980 | W | Hee Kwan Lee | Decision | 4 |
| 1980 | W | Jin Hyung Park | — | 3 |
| 1980 | W | Jung Yul Suh | — | 3 |
15 of these opponents have their own page here.
SOURCE·Chang Jung-koo — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-07
What is on record
| Reach | not recorded | |
|---|---|---|
| Height | 63″ (160 cm) | |
| Stance | Orthodox | |
| Division | Light Flyweight Boxing | |
| Most active decade | 1980s — 39 of 42 dated bouts | |
| Country | South Korea |
Wikipedia carries no reach figure for Chang Jung-koo, so the reach-advantage comparison this site is built on cannot be computed. Everything below comes from the record instead.
Record
Boxing record
38–4
42 bouts on record
Finish rate
45%
of wins ended inside the distance — light flyweight boxing median 53%, 37th percentile
The career, bout by bout
42 recorded bouts from 1980 to 1991. Every incumbent shows this as a table you have to read; here it is as a shape you can see.
Career span
12y
1980–1991
Longest unbeaten run
20
without a loss — draws do not break it
Busiest year
1981
9 bouts
Recorded bouts
42
42 with a date
What this record does and does not say
- What is Chang Jung-koo's record?
- 38–4 in boxing. That is the aggregate stated in the English Wikipedia infobox; the results table on the same article lists 42 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 103 light flyweight boxing fighters this record is ranked against, and the distribution Jung-koo sits inside.
103 FIGHTERS 1980s boxing39 of these bouts fall in the 1980s. This is what the rest of that decade's records look like.
205 FIGHTERS Longest unbeaten runsChang Jung-koo went 20 without a loss. This is where that sits against every run on the site.
LEADERBOARD