With UFC 254 in the books, MMA Fighting’s Mike Heck, Alexander K. Lee and E. Casey Leydon break down the top storylines from Saturday’s event in Abu Dhabi, including Khabib Nurmagomedov’s second-round submission win over Justin Gaethje to retain his lightweight title in the main event and his subsequent retirement.

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UFC 254 Post-Fight Show: Khabib Nurmagomedov Retires