Carlos Ulberg's shocking first-round knockout of Jiří Procházka at UFC 327 on April 11 captured the vacant light heavyweight title—the only new UFC champion crowned in 2026 thus far—after Alex Pereira vacated to pursue heavyweight contention. Most divisions feature recently installed belts, including Khamzat Chimaev's middleweight reign since August 2025 and Islam Makhachev's welterweight strap from November, both untested in defenses amid deep contender pools with stylistic threats like Dricus du Plessis and Jack Della Maddalena. Lightweight unification between Ilia Topuria and interim champ Justin Gaethje remains a pivotal upcoming clash, while pound-for-pound leaders dominate trader implied probabilities, though Ulberg's upset underscores volatility for ranked challengers in title fights through year's end.