The UFC heavyweight division enters the second half of 2026 as one of the most open title pictures in recent memory, with current champion Tom Aspinall still recovering from the eye injury that produced a no-contest against Ciryl Gane last October and forced multiple surgeries. That extended absence has elevated a crowded group of contenders whose recent form and stylistic matchups keep implied probabilities tightly bunched. Serghei Spivac’s unanimous decision win over Ante Delija in February sharpened his case, while Waldo Cortes-Acosta, Sergei Pavlovich, and Jailton Almeida continue to post strong performances that maintain their viability. Derrick Lewis’s knockout power and Alexander Volkov’s experience add further layers of uncertainty, ensuring no single fighter commands a clear edge among traders assessing paths to the belt by year’s end.