It's on! Khabib Nurmagomedov and Justin Gaethje both make weight for UFC 254

Undefeated lightweight champion looked relieved to come in at 155lbs on the button on Friday in Abu Dhabi

Khabib Nurmagomedov, left, and Justin Gaethje face-off on Friday ahead of their lightweight title bout at UFC 254 in Abu Dhabi. Courtesy UFC

Khabib Nurmagomedov on the scales at the weigh-in ahead of his UFC 254 clash with Justin Gaethje in Abu Dhabi. Josh Hedges / Zuffa LLC / UFC

Justin Gaethje on the scales at the weigh-in ahead of UFC 254. Josh Hedges / Zuffa LLC / UFC

Miranda Maverick on the scales at the weigh-in ahead of her UFC 254 bout against Liana Jojua. Josh Hedges / Zuffa LLC / UFC

Liana Jojua ahead of her bout against Miranda Maverick. Josh Hedges / Zuffa LLC / UFC

Shavkat Rakhmonov on the scales at the weigh-in ahead of his UFC 254 bout against Alex Oliveira. Josh Hedges / Zuffa LLC / UFC

Tai Tuisvasa on the scales at the weigh-in ahead of his UFC 254 bout against Stefan Struve. Josh Hedges / Zuffa LLC / UFC

Stefan Struve ahead of his bout against Tai Tuisvasa. Josh Hedges / Zuffa LLC / UFC

Robert Whittaker on the scales at the weigh-in ahead of his UFC 254 bout against Jared Cannonier. Josh Hedges / Zuffa LLC / UFC

Jared Cannonier ahead of his bout against Robert Whittaker. Josh Hedges / Zuffa LLC / UFC

Walt Harris on the scales at the weigh-in ahead of his UFC 254 bout against Alexander Volkov. Josh Hedges / Zuffa LLC / UFC

Alexander Volkov ahead of his bout against Walt Harris. Josh Hedges / Zuffa LLC / UFC

Alex Oliveira on the scales at the weigh-in ahead of his UFC 254 bout against Shavkat Rakhmonov Josh Hedges / Zuffa LLC / UFC

Jacob Malkoun on the scales at the weigh-in ahead of his UFC 254 bout against Phillip Hawes. Josh Hedges / Zuffa LLC / UFC

Phil Hawesahead of his bout against Jocob Malkoun. Josh Hedges / Zuffa LLC / UFC

Casey Kenney on the scales at the weigh-in ahead of his UFC 254 bout against Nathaniel Wood. Josh Hedges / Zuffa LLC / UFC

Nathaniel Wood ahead of his bout against Casey Kenney. Josh Hedges / Zuffa LLC / UFC

Joel Alvarez on the scales at the weigh-in ahead of his UFC 254 bout against Alexander Yakovlev. Josh Hedges / Zuffa LLC / UFC

Alexander Yakovlev ahead of his bout against Joel Alvarez. Josh Hedges / Zuffa LLC / UFC

Sam Alvey on the scales at the weigh-in ahead of his UFC 254 bout against Da-un Ung. Josh Hedges / Zuffa LLC / UFC

Da-Un Jung ahead of his bout against Sam Alvey. Josh Hedges / Zuffa LLC / UFC

Liliya Shakirova on the scales at the weigh-in ahead of her UFC 254 bout against Lauren Murphy. Josh Hedges / Zuffa LLC / UFC

Lauren Murphy ahead of her bout against Liliya Shakirova. Josh Hedges / Zuffa LLC / UFC

Magomed Ankalaev on the scales at the weigh-in ahead of his UFC 254 bout against Ion Cutelaba. Josh Hedges / Zuffa LLC / UFC

Michael Chandler poses on the scales during the UFC 254 weigh-in. Josh Hedges / Zuffa LLC / UFC

Saturday’s blockbuster main event at UFC 254 is official after Khabib Nurmagomedov and Justin Gaethje both made weight on Friday morning in Abu Dhabi.

The undefeated lightweight champion, who has not competed since September last year, was first out at Flash Forum and, after needing the towel, looked visibly relieved to come in at 155lbs on the button.

Interim belt-holder Gaethje, meanwhile, weighed in a little later at 155lbs.

The American is looking to become the first man to defeat Nurmagomedov, who seeks to take his stellar professional record to 29-0. It is Nurmagomedov’s third title defence.

Having set up the clash by beating Tony Ferguson convincingly at UFC 249 in May, Gaethje’s pro record stands at 22-2.

With both fighters weighing in within the limit, it means Michael Chandler will have to wait for his UFC debut.

The American, who signed with the promotion last month, is in Abu Dhabi only as a potential stand-in should either Nurmagomedov or Gaethje have not made the bout. Chandler made weight on Friday, coming in at 155lbs.

The unification bout, one of the most eagerly anticipated of the year, tops the bills at UFC 254, which brings down the curtain on a second Fight Island series in the capital.