Sierra Championship Boxing happened in 1983.
Sierra Championship Boxing was created in 1983.
TKO Super Championship Boxing happened in 1992.
Barry McGuigan World Championship Boxing happened in 1985.
Showtime Championship Boxing was created in 1986.
TKO Super Championship Boxing was created on 1992-04-28.
Showtime Championship Boxing - 1987 was released on: USA: 1987
Barry McGuigan World Championship Boxing was created in 1985.
HBO World Championship Boxing was created on 1973-01-22.
A championship boxing match lasts 12 3 minute rounds
Jack Johnson
12
Showtime Championship Boxing - 1987 WBO Heavyweight Championship Brewster vs- Liakhovich was released on: USA: 1 April 2006