FNC 13: Nikola Joksović vs. Savo Lazić

FNC 13 took place on November 4, 2023, at the Aleksandar Nikolić Hall (Pionir) in Belgrade, Serbia. This was the promotion's massive debut in Serbia, selling out the iconic arena with approximately 7,000 fans. In the main event, Nikola Joksović successfully defended his FNC Welterweight Championship by defeating Savo Lazić via submission (rear-naked choke) in the second round. The co-main event featured the highly anticipated grudge match between Francisco "Croata" Barrio and Vaso Bakočević, where Barrio once again secured a second-round submission victory. The event was a major success, featuring top regional stars like Marko Bojković and further cementing FNC's dominance in the Balkans.