San Francisco 49ers special teams prove their game-changing impact in a nail-biting Week 4 win over the Denver Broncos, sparking momentum with Siran Neal's forced fumble and seamless coverage on explosive returns. With Brant Boyer’s unit dominating field position and forcing critical turnovers, the 49ers continue to showcase why elite special teams can decide hard-fought NFL games. Rising defensive tackle Sebastian Valdez gets his chance to shine amid key injuries on San Francisco’s defensive line, earning high Pro Football Focus grades and stepping up against the run. As the 49ers prepare for a pivotal NFC West showdown against the Seattle Seahawks, can Valdez’s relentless play help the team to another crucial win?