Which South African professional boxer did  Cedric Kushner managed
Corrie Sanders Cornelius Johannes "Corrie" Sanders (7 January 1966 – 23 September 2012) was a South African professional boxer who competed from 1989 to 2008. He won the WBO heavyweight title in 2003 after stopping Wladimir Klitschko in two rounds, which was considered one of the biggest upsets in heavyweight boxing history; "The Ring" magazine named it the Upset of the Year. In 2004, having vacated the WBO title, Sanders faced Wladimir's brother Vitali Klitschko in an unsuccessful challenge for the vacant WBC and "Ring" heavyweight titles.
Mushy Callahan Mushy Callahan (November 3, 1904 – June 18, 1986) was the ring name of Vincent Morris Scheer, a Los Angeles-based boxing champion in the newly created World Light Welterweight Division for five years from 1926-30. The championship was formerly referred to as the World SuperLightweight Title. After his retirement from boxing in 1932, Callahan refereed hundreds of matches, and had a thirty-year career taking small roles in movies, most with boxing themes, as well as working as a stuntman and boxing adviser on movie sets.