Mike Tyson would fire sparring partners, for whom he had paid thousands, because they weren't "kicking his a**" during his boxing prime.
Tyson was one of the greatest heavyweight champions in history, and held unified titles twice in his career. During that time, fans and fighters alike feared his legendary power, and he found it difficult to find sparring partners who would test him to the level needed.
So he would pay thousands to get sparring partners to come in, only to leave frustrated because they would struggle to give him the requisite challenge. He told UFC middleweight champion Israel Adesanya in a recent episode of his podcast Hot Boxin' that he would fire partners who didn't beat him in the gym.
