San Francisco 49ers shock critics with a top-5 NFL run defense, anchored by the unlikely rise of young talents like Sebastian Valdez and Gracen Halton alongside Pro Bowl linebacker Fred Warner and key veteran Dre Greenlaw. Concerns about the defensive tackle rotation faded as the unit consistently stifled opponents’ ground attacks, holding elite backs like Bijan Robinson in check and limiting explosive plays. Center Jake Brendel's surprising 2026 season becomes a central storyline, raising questions about his future and the 49ers’ plan at the position as he excels in pass protection and enters a contract year. With the franchise pushing for a Super Bowl run and looming salary cap challenges, how will San Francisco handle the contract dilemmas facing Brendel and other key pieces on the offensive line?