All Boxers Russian-Australian professional boxer:

Konstantin Borisovich “Kostya” Tszyu is a Russian-Australian former professional boxer who competed from 1992 to 2005. He is a two-time light welterweight world champion, having also held the undisputed and lineal titles of that division from 2001 to 2003. Tszyu was an exceptional all-around boxer-puncher who relied heavily on accuracy and timing, and carried formidable punching power; he is often regarded as one of the hardest-punching light welterweights in the division’s history.