Which South African professional boxer did  Cedric Kushner managed
Cedric Kushner Cedric Kushner (July 18, 1948 – January 29, 2015) was a South African-born American boxing promoter and manager. In the late 1990s he was one of the most significant promoters in the sport. Boxers he promoted and/or managed included Hasim Rahman, Shannon Briggs, Oleg Maskaev, Chris Byrd, Corrie Sanders, Ike Ibeabuchi and David Tua.
Andrey Kurnyavka Andrey Petrovich Kurnyavka (Russian: Андрей Петрович Курнявка , born 4 May 1968) is a retired Soviet and Kyrgyzstani amateur boxer. He won the world middleweight title in 1989, and finished second in 1991, but was not included to the 1992 Soviet Olympic team and retired from boxing. He went out of retirement after a last-minute offer to compete for Kyrgyzstan at the 1996 Summer Olympics, but lost in the first bout to the eventual winner Félix Savón.