| Birth Day | September 19, 1969 |
| Birth Place | Russia |
| Kostya Tszyu age | 54 YEARS OLD |
| Birth Sign | Virgo |
4-Time World Light Welterweight Champion, and the undisputed Light Welterweight Champion from November 2001-January 2004.
He fought in over 30 countries as an amateur.
He was ordered to pay his former manager, Bill Mordey, $3.5 million in a civil suit.
His mother was a nurse.
He took the WBC Light Welterweight title vacated by Oscar De La Hoya in 1999.
