UFC 317 experienced significant last-minute changes due to a fighter missing weight and being cut from the promotion. Christopher Ewert, who was scheduled for his UFC debut, missed weight by 10 pounds and was subsequently released before the fight could occur. This cancellation affected the preliminary card, which was supposed to start with Ewert vs. Jackson McVey. Despite the cancellation, McVey weighed in at 185 pounds and was paid his show money. The main event featured Ilia Topuria versus Charles Oliveira for the vacant lightweight title, with both fighters making weight successfully. Other bouts included Alexandre Pantoja defending his flyweight title and several preliminary matches. The event was held at the T-Mobile Arena in Las Vegas, during International Fight Week, with the fight card including two title fights. The event was marked by high tension, sportsmanship, and dramatic weigh-in results, notably Ewert's weight miss and subsequent firing from UFC. The fight results saw Gregory Rodrigues defeating Jack Hermansson and other notable performances, with the main event delivering an exciting lightweight title fight.