What is Kostya Tszyu's record?

31–2 in boxing. That is the aggregate stated in the English Wikipedia infobox; the results table on the same article lists 34 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.

Kostya Tszyu — record, reach and career in context

Boxing record

31–2

Kostya Tszyu has a reach of 67″ against a height of 67″ — a reach advantage of 0%, unusually short for light welterweight boxing and the 12th percentile of the 97 compared here.

WON ABOVE·LOST BELOW BAR = STOPPAGE·BROKEN BAR = SUBMISSION·TICK = DECISION 1992–2005

SOURCE·Kostya Tszyu — 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 record template — 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 97 light welterweight boxing fighters in the dataset — the most specific group of at least 30 that this fighter belongs to.

reach advantage = (reach − height) ÷ height × 100

Sources, exclusions and known limits →

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.

Bout-by-bout recordAUG 2026
Year	Result	Opponent	Method	Rd
2005	L	Ricky Hatton	KO/TKO	11
2004	W	Sharmba Mitchell	KO/TKO	3
2003	W	Jesse James Leija	KO/TKO	6
2002	W	Ben Tackie	Decision	12
2001	W	Zab Judah	KO/TKO	2
2001	W	Oktay Urkal	Decision	12
2001	W	Sharmba Mitchell	KO/TKO	7
2000	W	Julio César Chávez	KO/TKO	6
2000	W	Ahmed Santos	KO/TKO	8
1999	W	Miguel Angel Gonzalez	KO/TKO	10
1998	W	Diosbelys Hurtado	KO/TKO	5
1998	W	Rafael Ruelas	KO/TKO	9
1998	W	Calvin Grove	KO/TKO	1
1997	W	Ismael Armando Chaves	KO/TKO	3
1997	L	Vince Phillips	KO/TKO	10
1997	?	Leonardo Mas	—	1
1996	W	Jan Piet Bergman	KO/TKO	6
1996	W	Corey Johnson	KO/TKO	4
1996	W	Hugo Pineda	KO/TKO	11
1995	W	Roger Mayweather	Decision	12
1995	W	Jake Rodríguez	KO/TKO	6
1994	W	Pedro Sanchez	KO/TKO	4
1994	W	Angel Hernandez	—	7
1994	W	Hector Lopez	Decision	10
1993	W	Livingstone Bramble	Decision	10
1993	W	Robert Rivera	KO/TKO	1
1993	W	Larry LaCoursiere	KO/TKO	1
1993	W	Steve Larrimore	KO/TKO	2
1992	W	Sammy Fuentes	KO/TKO	1
1992	W	Daniel Ricardo Cusato	KO/TKO	7
1992	W	Juan Laporte	—	10
1992	W	Tony Jones	KO/TKO	2
1992	W	Nedrick Simmons	—	1
1992	W	Darrell Hiles	—	1

21 of these opponents have their own page here.

SOURCE·Kostya Tszyu — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-07

Reach in context

Reach advantage

0%

67″ reach on a 67″ frame

lowestmedianhighest

Compared against 97 light welterweight boxing fighters. Median 2.34%.

-3%light welterweight boxing reach advantage8.9%

Measurements
Reach	67″ (170.2 cm)	12th pct
Height	67″ (170.2 cm)	30th pct
Stance	Orthodox
Division	Light Welterweight Boxing
Most active decade	1990s — 25 of 34 dated bouts
Country	Russia

Record

Boxing record

31–2

34 bouts on record

Finish rate

81%

of wins ended inside the distance — light welterweight boxing median 56%, 88th percentile

By knockout 81%
By decision 19%

The career, bout by bout

34 recorded bouts from 1992 to 2005. Every incumbent shows this as a table you have to read; here it is as a shape you can see.

winlossdraw / NC1992–2005

Career span

14y

1992–2005

Longest unbeaten run

19

without a loss — draws do not break it

Busiest year

1992

6 bouts

Recorded bouts

34

34 with a date

Closest in build

light welterweight boxing fighters with the nearest reach advantage.

Standing questions

What this record does and does not say

What is Kostya Tszyu's record?: 31–2 in boxing. That is the aggregate stated in the English Wikipedia infobox; the results table on the same article lists 34 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.

Cross-references

Light welterweight boxing

The 182 light welterweight boxing fighters this record is ranked against, and the distribution Tszyu sits inside.

182 FIGHTERS 1990s boxing

25 of these bouts fall in the 1990s. This is what the rest of that decade's records look like.

307 FIGHTERS Longest unbeaten runs

Kostya Tszyu went 19 without a loss. This is where that sits against every run on the site.

LEADERBOARD