The pair meet in a light middleweight bout at the T-Mobile Arena in Las Vegas, but before that there is the issue of the final press conference.
The fighters embarked on a four-city press tour at the start of camp and had a succession of press conferences that were equal parts entertaining, controversial, and at times utterly bizarre.
Tonight at 9pm (Irish time)* it will be the final press conference, an event many claimed will be more entertaining than the fight itself.
Most on this side of the Atlantic are used to press conferences taking place on Thursdays, but this event’s main press conference will happen tonight, with an undercard presser tomorrow
Watch the UFC live stream below:
*Of course, as the world tour showed, it may be slightly later than advertised.