Britain’s Anthony Joshua will face unified world heavyweight champion Andy Ruiz Jr in their rematch in Saudi Arabia on 7 December.
The pair fought in New York in June, with Ruiz earning a shock seventh-round stoppage victory to hand Joshua his first professional loss.
Ruiz, who was knocked down in the third round before recovering, picked up the WBA, IBF, WBO and IBO world titles.
Cardiff’s Principality Stadium had been among the options to host the rematch.
Joshua, 29, had said his preference was to fight in the Welsh capital, where he has previously fought in front of crowds of more than 70,000 people for his wins over Carlos Takam and Joseph Parker.
However, 29-year-old Ruiz, who was born in the United States but has Mexican heritage, had ruled out a fight taking place in the United Kingdom.S
Human rights campaigners have questioned the choice of venue, citing Saudi Arabia’s “abysmal” human rights record.
Amnesty International said Joshua should learn about conditions in the country and “be prepared to speak out” on the issue.
Amnesty UK’s head of campaigns Felix Jakens said the heavyeight contest was “likely to be yet another opportunity for the Saudi authorities to try to ‘sportswash’ their severely tarnished image”.
Saudi Arabia hosted British boxer Amir Khan’s recent win over Billy Dib and Callum Smith’s success over George Groves in the World Boxing Super Series final in September.