It's not the fight that many fans had hoped for, but there is still a title of sorts on the line as McGregor and Mendes face off for the interim belt while Aldo recovers from his rib injury. McGregor's preparations for the fight would have been aimed at countering Aldo's powerful leg kicks and Brazilian Jiu-Jitsu skills, but Mendes offers a completely different style based on his background as an All-American wrestler. While that could hold some surprises for McGregor when it comes to avoiding his takedowns, the Irishman's reach and height advantage, not to mention his striking power, will also make this a very awkward fight for Mendes to contend with on such short notice. Neil Seery, another of Ireland's UFC stars, is on the undercard which may feature as a highlight in the main show, while Cathal Pendred and Gunnar "Gunni" Nelson will also be in action, both SBG team-mates of McGregor, who can hopefully make it another clean sweep for the Irish. If you fancy getting the majority of a night's sleep, then the main event should start around 5am (maybe slightly before), so make sure you have plenty of coffee on hand.