In a tightly contested matchup, the Denver Broncos narrowly defeated the San Francisco 49ers, 21-17, in Week 4 of the 2026 season. With playoff aspirations on the line, both teams fought hard, but it was the Broncos who came out on top, securing a crucial victory. Jalen Milroe led the Broncos' offense with a strong performance, throwing for 122 yards and two touchdowns. His ability to connect with Brenen Thompson, who racked up 85 receiving yards, proved pivotal in keeping the chains moving. Meanwhile, Emmitt Smith of the 49ers showcased his rushing prowess with 101 yards on the ground, keeping San Francisco competitive until the final whistle. Defensively, the Broncos made key plays to thwart the 49ers' efforts, with Patrick Queen leading the team in tackles with four. Andrew Van Ginkel added a sack, applying pressure throughout the game, while Will Anderson Jr. secured an interception that shifted momentum in Denver's favor. The game’s turning point came late in the fourth quarter when Anderson's pick set up a crucial touchdown drive, ensuring the Broncos held off a late-game surge from San Francisco.