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.
Barry McGuigan World Championship Boxing was created in 1985.
TKO Super Championship Boxing was created on 1992-04-28.
HBO World Championship Boxing was created on 1973-01-22.
Showtime Championship Boxing - 1987 was released on: USA: 1987
Jack Johnson
Showtime Championship Boxing - 1987 WBO Heavyweight Championship Brewster vs- Liakhovich was released on: USA: 1 April 2006
12
Showtime Championship Boxing - 1987 WBC Lightweight Championship Corrales vs- Casamayor III was released on: USA: 7 October 2006