Muhammad Ali is widely regarded as one of the greatest heavyweight boxers of all time, and his jab was certainly one of his greatest weapons in the ring. However, it is difficult to say definitively whether he was the best heavyweight boxer with a jab, as there have been many great boxers throughout history who have also had exceptional jabs.


Some other notable heavyweight boxers who were known for their jabs include:


Larry Holmes: a former heavyweight champion who had one of the best jabs in boxing history. His jab was known for its speed, accuracy, and power.


Sonny Liston: a former heavyweight champion who had a very effective jab that he used to control the distance between himself and his opponents.


Lennox Lewis: a former heavyweight champion who had a strong, accurate jab that he used to set up his other punches.


Joe Louis: a former heavyweight champion who had a very powerful jab that he used to wear down his opponents over the course of a fight.


While each of these boxers had their own unique styles and strengths, they were all known for their exceptional jabs, and could be considered among the best heavyweight boxers with a jab in their own right.