While Floyd "Money" Mayweather Jr. was perhaps best known for his elite defense, much of this defensive aptitude was owed to his having some of the greatest footwork ever seen in the sweet science.

More than a dozen insiders in boxing — from promoters to fighters, coaches, and experts across the business in logistics, broadcast and law — are divided over a fast-moving piece of federal ...

We did it to get in their heads and have fun,” López’s trainer—his father, Teófimo López, Sr.—explained afterward. “We showed the whole world that we’re the only entertainers in the game.” López, Sr., ...