Dustin Poirier admitted he was "f**king dominated" by Khabib Nurmagomedov in a brutal assessment of his own performance.
The 30-year-old from Louisiana was beaten by the Russian champion after three one-sided rounds in Abu Dhabi last weekend.
And 'UFC 242: The Thrill And The Agony' showed a behind-the-scenes look at the event in the Middle East, including Poirier's initial reaction.
He was heard telling his camp inside the octagon in the immediate aftermath of his defeat: "I'm sorry man. I'm better than that, I got f**king dominated. I'm so much better than that."
Poirier's team tried to keep his spirits up and told a despondent fighter: "You're good champ."
The UFC's access-all-areas show also revealed the reaction of both families after Khabib's third-round victory.
The Russian's camp were seen looking towards the sky and saying "God is great" while Poirier's wife Jolie looked on in despair.
Also captured by the footage was Khabib's touch of class after the fight in which he gave Poirier a shirt to be auctioned off for charity.
The Russian said: "Here's a gift for you. You can sell this and make what you want for charity. You're the most respected fighter for me and for my family."
Poirier responded: "Thank you, man. I appreciate it. You're a great champion, thank you man. I knew you were a good guy. You've earned this, you're the champion."
The 30-year-old broke down in tears in his post-fight interview in Abu Dhabi.
A tearful Poirier said: "I feel like I let myself down. I didn't cut any corners in preparing for this and now I have to look at myself in the mirror every morning with this result.
"If anything adversity has taught me in the past, it's when times are good be grateful and in times like this be graceful.
"I'm going to go home and spend some time with my family. I'm proud of everything I've accomplished in this sport, I have a lot of tread left in the tyres but right now I just need some time to think."
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