The 28-year-old Irishman became the first UFC fighter to hold two belts simultaneously when he knocked out Eddie Alvarez in New York last November for the lightweight championship.
The UFC stripped McGregor of his featherweight belt shortly after that fight when he announced he would be taking some time off after he and long-time partner Dee Devlin had their first baby in May.
Known for his devastating striking and highlight-reel knockouts, McGregor is also quick and irrational on his feet, but few would back him to beat one of the most complete boxers of all time.
What are the rules of the fight?
The fight will be held under boxing rules, presenting a huge challenge for mixed martial artists McGregor as he faces off against one of the greatest defensive boxers in history.
Adding to McGregor’s challenge, he will not be allowed to use the leg kicks or takedowns that are used in mixed martial arts.
McGregor will weigh in at 154 pounds, UFC president Dana White told ESPN. The pair will wear 8oz gloves, which you can read more about here.
Who is referee, who are the judges?
- REFEREE: Robert Byrd
- JUDGES: Burt Clements, Dave Moretti and Guido Cavalieri
Vastly experienced American referee Robert Byrd will be the third man in the ring, with the judges confirmed as Burt Clements, Dave Moretti, both American, and Guido Cavalleri, of Italy, after McGregor’s team had requested an international judge in the trio.