Errol Spence Jr. is an American professional boxer. He is a former unified champion in the welterweight division, having held the World Boxing Association (WBA), World Boxing Council (WBC), and International Boxing Federation (IBF) titles between 2017 and 2023. As an amateur, in the welterweight division, he won three consecutive United States national championships and represented the U.S. at the 2012 Olympics, where he reached the quarter-finals. In 2015, Spence was named Prospect of the Year by ESPN.

The World Boxing Association (WBA), formerly known as the National Boxing Association (NBA), is the oldest and one of four major organizations which sanction professional boxing bouts, alongside the World Boxing Council (WBC), International Boxing Federation (IBF) and World Boxing Organization (WBO). The WBA awards its world championship title at the professional level. Founded in the United States in 1921 by 13 state representatives as the NBA, in 1962 it changed its name in recognition of boxing's growing popularity worldwide and began to gain other nations as members.