Justin Gaethje holds the UFC Lightweight title after capturing the interim belt with a unanimous decision over Paddy Pimblett in January 2026 and then unifying against Ilia Topuria via fourth-round TKO at UFC Freedom 250 in June. At 37, Gaethje has publicly signaled a very low likelihood of additional bouts this year, limiting immediate title-change opportunities before December 31. Topuria’s subsequent injury and hiatus further cleared the path, while Arman Tsarukyan and other ranked contenders lack scheduled unification bouts or sufficient momentum in the compressed remainder of the year. Traders price Gaethje as the overwhelming favorite because the division’s recent results and calendar constraints heavily favor the incumbent retaining the belt through year-end.