49ers Rookies Showcase Potential in Broncos Preseason Loss

The San Francisco 49ers opened their 2025 preseason with a 30-9 loss to the Denver Broncos, featuring notable performances and challenges. Rookie defensive tackles Alfred Collins and CJ West gained valuable experience facing All-Pro blockers, though they struggled to make an impact, underscoring the learning curve for new NFL players. On offense, quarterback Mac Jones impressed with a strong opening drive capped by a 50-yard completion to rookie wide receiver Jordan Watkins, who showed flashes of potential despite some rookie mistakes. Another rookie, safety Marques Sigle, stood out defensively with seven tackles before leaving the game with a minor knee injury. Meanwhile, concerns loom over the 49ers' backup left tackle position, where lackluster play from Spencer Burford exposed the team to pressure, highlighting a potential vulnerability if starter Trent Williams is unavailable. Overall, the game marked early steps for rookies and highlighted areas needing improvement as the team moves forward in the preseason.