Photo via CBS Sports

Why 49ers' Brock Purdy vs. Broncos' pass rush is set to be one of NFL's best Week 4 showdowns

San Francisco quarterback Brock Purdy is enjoying a historic start to the 2026 campaign, mirroring Dan Marino's iconic 1984 MVP run by racking up ten-plus total touchdowns while avoiding any sacks through three games. His stellar efficiency puts him at the top of the league in passer rating, expected points added per dropback, and passing success rate, all while navigating ongoing injuries among his offensive teammates.

Week four brings a major test as the 49ers prepare to face the Denver Broncos in a Sunday afternoon matchup televised on CBS. The contest features a clash between San Francisco, the team allowing the fewest sacks over the past two seasons, and Denver, the unit leading the league in sacks during that same stretch under defensive coordinator Vance Joseph.

The Broncos boast a formidable pass rush anchored by Zach Allen and Nik Bonitto, which consistently pressures opposing quarterbacks. However, Purdy has excelled against the blitz this season, averaging a league-high 14.7 yards per attempt when opponents send extra rushers.

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