Floyd Mayweather Jr. vs. Conor McGregor, billed and promoted as The Money Fight and The Biggest Fight in Combat Sports History, was a professional crossover boxing match between undefeated eleven-time five-division boxing world champion Floyd Mayweather Jr. and two-division mixed martial arts (MMA) world champion and, at the time, UFC Lightweight Champion Conor McGregor. The fight took place at T-Mobile Arena in Paradise, Nevada, on August 26, 2017, at the light middleweight limit. It was scheduled for twelve rounds and recorded the second highest pay-per-view buy rate in history, behind Mayweather vs. Pacquiao.

Yordenis Ugas Hernández is a Cuban professional boxer. He held the WBA (Super) welterweight title from 2021 to April 2022, having previously held the WBA (Regular) title from 2020 until being elevated to Super champion. As an amateur, Ugás won a gold medal at the 2005 World Championships and bronze at the 2008 Olympics, both in the lightweight division. As of October 2021, he is ranked as the world's third-best active welterweight by the Transnational Boxing Rankings Board, The Ring magazine and BoxRec. He is also ranked as the eighth-best active boxer, pound for pound, by BoxRec.