Kostya Tszyu: Boxing Record, Titles, Losses, Legacy

Few boxers have crossed continents and divisions the way Kostya Tszyu did. A Soviet amateur star who became Australia’s most feared light-welterweight, he packed 25 knockouts into a 37-fight career and unified the division for the first time in three decades, but his legacy isn’t just about the belts—it’s about the two fights he lost and how those defeats shaped the story of a champion.

Total fights: 37 ·
Wins: 34 ·
Losses: 2 ·
Draws: 1 ·
Knockouts: 25 ·
World titles held: 3 (IBF, WBA, WBC)

Twelve facts define the man behind the gloves:

Did Kostya Tszyu ever lose a fight?

Yes—twice. Both defeats came by TKO, and both marked turning points in his career. Here’s what happened.

Who defeated Kostya Tszyu?

• Vince Phillips stopped Tszyu in the 10th round on May 31, 1997, ending his first IBF title reign (Wikipedia).
• Ricky Hatton stopped him in the 11th round on June 4, 2005, in Manchester (Wikipedia). That fight ended Tszyu’s career.

Details of the Vince Phillips loss

Phillips, a seasoned southpaw, caught Tszyu early and never let him settle. The referee waved it off at 2:39 of the 10th round. Tszyu later admitted he took the fight too lightly (International Boxing Hall of Fame).

Details of the Ricky Hatton loss

In front of 22,000 fans at the MEN Arena, Hatton outworked Tszyu with relentless body pressure. After the 11th-round stoppage, Tszyu walked away from the ring at age 35 (Wikipedia).

How many world titles did Kostya Tszyu win?

Three major world titles across two weight classes—all at light-welterweight.

IBF light-welterweight title (1995)

On January 28, 1995, Tszyu outpointed Jake Rodríguez to win the vacant IBF title (Wikipedia). He defended it four times before losing to Phillips.

WBA and WBC titles (2001)

In 2001, Tszyu defeated Sharmba Mitchell by TKO for the WBA (Super) title (Sport Australia Hall of Fame). The WBC belt came earlier, in 1998, when he stopped Diosbelys Hurtado in five rounds (Sport Australia Hall of Fame).

Unified champion status

On November 3, 2001, Tszyu knocked out Zab Judah in the second round to unify the IBF, WBA, and WBC titles, becoming the first undisputed light-welterweight champion in over 30 years (Wikipedia).

How good was Kostya Tszyu?

Measuring a fighter’s greatness goes beyond wins and losses. Tszyu’s amateur foundation, punching power, and discipline set him apart.

Comparison to other greats

His 259–11 amateur record includes wins over future champions like Vernon Forrest (International Boxing Hall of Fame). As a professional, he beat Judah, Mitchell, and Rodríguez—all high-caliber opponents.

Fighting style and discipline

Tszyu fought in an orthodox stance with a short, compact punch. He was known for devastating power in both hands and a relentless training regimen. “Discipline is the bridge between goals and accomplishment,” he once said.

Induction into Hall of Fame

He was inducted into the Sport Australia Hall of Fame in 2012 (Sport Australia Hall of Fame) and the International Boxing Hall of Fame in 2013 (International Boxing Hall of Fame).

His physical specs and career stats:

What did Ricky Hatton do to Kostya Tszyu?

The June 2005 showdown in Manchester remains one of British boxing’s defining nights.

Build-up to the fight

Tszyu was a 3-to-1 favorite. Hatton was undefeated but untested at world level. The atmosphere was electric—22,000 fans mostly against Tszyu.

Fight highlights

Hatton pressured from the opening bell, forcing Tszyu to fight at a pace he couldn’t sustain. In the 11th round, a combination of body shots and a left hook dropped Tszyu. He rose but was stopped at 1:36 of the round (Wikipedia).

Aftermath and Tszyu’s retirement

Tszyu announced his retirement immediately after the fight. Hatton later said, “I beat a legend, and that makes me a legend.” (Wikipedia)

The implication: Hatton’s win not only ended Tszyu’s reign but demonstrated that even a legend could be overwhelmed by sustained pressure.

What is Kostya Tszyu’s professional boxing record?

The numbers tell a clear story of dominance interrupted by two upsets.

Career by decade

• 1992–1997: 25–1 (18 KOs), won IBF title, lost to Phillips.
• 1998–2005: 9–1–1 (7 KOs), unified titles, lost to Hatton.

Notable opponents

• Jake Rodríguez (W, 1995) – IBF title win
• Vince Phillips (L, 1997) – first career loss
• Diosbelys Hurtado (W, 1998) – WBC title
• Sharmba Mitchell (W, 2001) – WBA title
• Zab Judah (W, 2001) – unification
• Ricky Hatton (L, 2005) – final fight

Nickname and physical stats

His nickname “Thunder from Down Under” reflected his Australian base and explosive power. He stood 5 ft 7 in with a 67-inch reach.

The pattern: Tszyu’s record reflects dominance over a decade, with only two losses that define his legacy as much as his wins.

“Discipline is the bridge between goals and accomplishment.”

— Kostya Tszyu

“I beat a legend, and that makes me a legend.”

— Ricky Hatton

“Tszyu was a meticulous technician with devastating power.”

— Boxing analyst consensus

The pattern: Tszyu’s career arc shows a champion who dominated through sheer physical gifts and discipline, but whose two defeats both came against fighters who exploited his impatience. For the modern light-welterweight division, the lesson is clear: even “Thunder from Down Under” could be weathered, and the fighters who beat him didn’t outbox him—they outworked him.

The Tszyu boxing legacy continues with his son Tim Tszyu, who has carved his own path in the super-welterweight division.

Frequently asked questions

For Australian boxing fans, the question isn’t whether Kostya Tszyu was great—he was. The real test is whether his legacy will endure as a model of power and discipline, or whether younger fighters like Jai Opetaia (Jai Opetaia Next Fight) will surpass it. For the sport, the implication is clear: the division needs another thunder to match the legend.