Kostya Tszyu: From Serov to Sydney and the Undisputed Junior Welterweight Crown
Born in the Urals and crowned amateur world champion in Sydney, Kostya Tszyu emigrated to Australia, knocked out Zab Judah to become undisputed junior welterweight champion in 2001 and later watched sons Tim and Nikita turn professional.
Kostya Tszyu grew up in an industrial town in the Urals, won the 1991 amateur world title in Sydney, then made that city his home. Ten years later in Las Vegas, as an Australian citizen, he stopped Zab Judah in two rounds and became the first fighter in decades to hold every major junior welterweight belt at once. Two of his sons, Tim and Nikita, now box for a living.
Serov, the Urals and a Restless Boy
Konstantin Tszyu was born on September 19, 1969, in Serov, a town near the Ural Mountains in what was then the Russian SFSR. According to Wikipedia's account of his life, his father worked as a fitter in a metal factory and was of Korean and Mongol descent, while his mother, who was Russian, worked as a nurse. The National Portrait Gallery of Australia describes his upbringing as one of straitened circumstances and says he started boxing at age nine.
His father is said to have taken him to a gym because the boy had more energy than he could use up.
Amateur Gold From Athens to Sydney
Tszyu boxed for the Soviet Union through the last years of the country's existence. He reached the 1988 Seoul Olympics and won two bouts before losing in the third round. In 1989 he won European gold at lightweight in Athens and a world championship bronze in Moscow. At the 1990 Goodwill Games in Seattle he took gold.
The year 1991 was his best. He won the European light welterweight title in Gothenburg, then travelled to Sydney for the World Championships and won the gold medal at light welterweight. His amateur record is not settled across sources. Wikipedia lists 270 bouts with 259 wins and 11 losses, while the National Portrait Gallery gives 248 wins from 259 fights.
Choosing Sydney as Home
The 1991 World Championships changed the course of his life. By Wikipedia's account, Tszyu took to Sydney and its people during the tournament and decided he wanted to live there. He moved to Australia early in 1992 with his girlfriend, Natasha Anikina. The couple married on September 24, 1993, became Australian citizens that year and settled in Sans Souci, a suburb in Sydney's south. In Sydney he went to work with trainer Johnny Lewis, who was in his corner for the rest of his professional career.
He turned professional on March 1, 1992, at Princes Park in Melbourne, knocking out Darrell Hiles 70 seconds into the first round.
The IBF Belt, Then the Phillips Setback
Within three years Tszyu was fighting for a world title. On January 28, 1995, at the MGM Grand Garden Arena in Nevada, he stopped Jake Rodríguez in the sixth round to win the IBF junior welterweight championship. He defended it five times, and one of those wins was a unanimous decision over the veteran Roger Mayweather.
The first loss of his career came on May 31, 1997, in Atlantic City. Vince Phillips stopped him in the tenth round and took the IBF title.
Rebuilding: the WBC, Chávez and Mitchell
He took two years to get back to a world title. On August 21, 1999, in Miami, he knocked out Miguel Ángel González in the tenth round to win the vacant WBC belt. On July 29, 2000, in Phoenix, he stopped Julio César Chávez in the sixth round, beating a former great late in his career.
On February 3, 2001, at the Mandalay Bay Events Center in Las Vegas, he faced WBA champion Sharmba Mitchell. Mitchell retired on his stool after the seventh round. Tszyu now held two of the three major belts, and the third belonged to an unbeaten southpaw from Brooklyn.
Two Rounds Against Zab Judah
Zab Judah was 24 years old, 27-0 and the IBF champion when the two met on November 3, 2001, at the MGM Grand Garden Arena. Tszyu was 32 and 27-1. Wikipedia reports purses of $1.5 million for Tszyu and $1 million for Judah, and records Tszyu as roughly a 2½-1 underdog despite his two belts. The Fight City described Judah as the heavy favorite and recalled that Judah had mocked Tszyu's style before the bout, likening it to Swiss cheese.
Judah was the sharper man in the first round and landed a left uppercut that rocked Tszyu. In the closing seconds of the second, Tszyu found him with right hands. Judah went down, got up too fast, staggered across the ring and fell face-first near his corner. Referee Jay Nady stopped it without a count, one second from the bell. ESPN's report said Nady waved it off because he believed Judah was out on his feet. Judah reacted furiously: he threw his stool into the ring and had to be held back. Wikipedia records that the Nevada State Athletic Commission later suspended him for six months and fined him $75,000.
The win made Tszyu the first three-belt undisputed champion in the division. Sources disagree on how long the 140-pound title had been divided before that. Wikipedia names Takeshi Fujii and 1968 as the previous undisputed reign, The Fight City says 1967, and Tszyu's own Wikipedia biography describes him as the first man in 30 years to unify the belts.
Reign, Injury and a Comeback
Tszyu kept the titles through a unanimous decision over Ben Tackie in May 2002 and a sixth-round retirement by Jesse James Leija in Melbourne in January 2003. Inactivity followed. When he returned on November 6, 2004, in Phoenix, he stopped Sharmba Mitchell in the third round of their rematch, and The Ring named him its comeback fighter of the year.
Manchester, 2005: The Last Night
His final fight, on June 4, 2005, was a defense of the IBF title against Ricky Hatton at the Manchester Evening News Arena. Hatton's pressure wore him down, and Tszyu did not come out for the twelfth round. Wikipedia notes that Tszyu was behind on all three scorecards when it ended. He never fought again. RingTalk has covered that night in detail in a separate article on Hatton vs Tszyu.
He finished with 31 wins, 25 by knockout, two losses and one no contest in 34 professional bouts.
Hall of Fame and Life After Boxing
In March 2010 The Ring ranked Tszyu the best junior welterweight of the 2000s. That December he was announced as a member of the International Boxing Hall of Fame's Class of 2011.
In September 2012 he moved to Moscow, according to Wikipedia. Between 2012 and 2013 he trained professionals including Alexander Povetkin and Denis Lebedev. He remarried and runs a restaurant in Moscow. Not every source agrees: the National Portrait Gallery's biographical note still says he lives in Sydney and runs a boxing academy there.
Tim and Nikita: The Next Tszyus
Kostya and Natasha had three children: Anastasia, Tim and Nikita. Both sons became professional boxers in Australia. Tim, born in Sydney on November 2, 1994, turned professional in 2016. On March 12, 2023, he stopped Tony Harrison in the ninth round to win the WBO interim junior middleweight title. He was elevated to full champion later that year and defended the belt against Brian Mendoza on October 15, 2023. He lost the title to Sebastian Fundora by split decision in March 2024, was stopped by Bakhram Murtazaliev in an IBF title fight that October, and lost a 2025 rematch with Fundora. Wikipedia records a unanimous-decision win over Errol Spence Jr. on July 25, 2026.
Nikita, born January 19, 1998, made his professional debut on March 3, 2022, in Brisbane, almost exactly thirty years after his father's first pro fight. He won the Australian super welterweight title in November 2023. Wikipedia lists his most recent bout as a split draw with Ben Mahoney in a world title eliminator on August 26, 2026.
Sources
- Kostya Tszyu, Wikipedia, accessed October 2026
- Kostya Tszyu vs. Zab Judah, Wikipedia, accessed October 2026
- Tim Tszyu, Wikipedia, accessed October 2026
- Nikita Tszyu, Wikipedia, accessed October 2026
- Tszyu vs. Judah fight report, ESPN, November 4, 2001
- Nov. 3, 2001: Tszyu vs Judah, The Fight City, accessed October 2026
- Kostya Tszyu portrait by Yoli Salmona (biographical note), National Portrait Gallery of Australia, accessed October 2026
