Breakdown
Walker is the longer, more explosive fighter at 6'6" with an 82-inch reach, and he carries real finishing power: 0.74 knockdowns per 15 minutes and a 47% finish rate. Cortes Acosta is the busier, steadier striker, landing 4.74 significant strikes a minute to Walker's 3.73 with better defence (55% to 49%). Neither fighter wrestles much or controls opponents on the mat, with both at 9% control time, though Cortes Acosta's takedown defence (69%) is stronger. Walker has been knocked out four times, and Cortes Acosta never has.
Our model gives Cortes Acosta a slight edge, 53% to 47%. Three numbers drive that: his higher Elo (1611 to 1571), his stronger win rate (69% to 56%), and his edge in volume and defence. Walker's power and reach keep it close. The market is far more confident, putting Cortes Acosta at 68%, 15 points above us. The likeliest reason is Walker's knockout history, plus the short-notice booking after Sean Brady's injury, which the model can't weigh. Both men made weight for the five-round main event.
Key question: can Walker land one big shot early, or does Cortes Acosta's volume and durability take over across five rounds?