HBO World Championship Boxing influx of streaming options and issues with promoters, along with declining ratings and loss of interest in the sport among HBO's subscribers, made continued carriage of the sport untenable. HBO's long-term move to upscale dramatic programming and an ownership transfer to AT&T's WarnerMedia also played a role in the decision, with an HBO executive commenting that "HBO is not a sports network." Famous matches broadcast on "World Championship Boxing" include: The Rumble in the Jungle, in which Muhammad Ali regained the world heavyweight title from George Foreman in Kinshasa, Zaire in 1974; Thrilla in Manila, the final encounter between Muhammad
Muhammad Ali vs. Joe Frazier II least significant and interesting fight of their rivalry. One columnist described it as a contest between two "former champions, both beaten, both past their best". Nonetheless, Ali wanted to avenge his loss to Frazier in their first fight, and a world title try at Heavyweight champion George Foreman, who had dethroned Frazier, was at stake. Their first and third fights became part of boxing's lore, but some viewers considered the second fight to be entertaining as well. On January 23, 1974 (5 Days Before Their Rematch), Ali and Frazier visited the ABC studios in New York City to review their