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
George Foreman later charged that Angelo Dundee had loosened them, and this story is supported by Norman Mailer in the book "The Fight"), allowed Ali to lean back and away from Foreman's wild swings and then to clinch Foreman behind the head, forcing Foreman to expend much extra energy untangling himself. Ali also constantly pushed down on Foreman's neck but was never warned about doing so. To this day, it is unclear whether Ali's pre-fight talk of using speed and movement against Foreman had been just a diversionary tactic or whether his use of what became known as the "rope-a-dope" tactic was