This market will resolve according to the official UFC Lightweight division champion on December 31, 2026 at 12:00 PM ET. Only official UFC division champions will count. Interim champions will not count. If the relevant belt is vacant at this market’s check time, or there is otherwise no champion in the specified division, this market will resolve to “Other”. The primary resolution source for this market will be official information from the UFC (https://www.ufc.com/athletes).
Justin Gaethje captured the undisputed UFC lightweight title with a fourth-round TKO of Ilia Topuria in June 2026, entering the final months of the year as champion with zero defenses. The 37-year-old has publicly ruled out any return in 2026 due to lingering hand injuries sustained in that bout, leaving no lightweight title fight scheduled through December. This inactivity underpins trader consensus around Gaethje holding the belt at year-end, as the division sorts contenders via bouts like Arman Tsarukyan versus Mauricio Ruffy. A vacancy, retirement announcement, or unforeseen interim-title development could still shift the outcome before resolution.