Navajo Stirling has done nothing but win since arriving — 4-0 in the UFC, with decisions over Tuco Tokkos, Ivan Erslan, and Rodolfo Bellato before a second-round knockout of Bruno Lopes in March that showed his finishing was catching up to his polish. The model leans his way at medium confidence, crediting the trajectory.

Ion Cutelaba is the chaos test. A 20-fight UFC veteran, 'The Hulk' is coming off a first-round submission of Oumar Sy and remains the kind of unpredictable, all-action fighter who can drag a prospect into deep, ugly water. Stirling has the cleaner resume and the momentum; Cutelaba has the experience and the wildness. Whether the unbeaten man's poise holds up against a veteran who specializes in unmaking game plans is the fight.