Brock Purdy hasn't been sacked through three games. Here's why the 49ers' offensive line, written off all offseason, is now a top-five unit in the NFL.
Three weeks into the season, Brock Purdy's jersey is still clean.
That sounds like a throwaway line, but it's the most important stat for the San Francisco 49ers right now. Purdy hasn't been sacked a single time in 2026.
Not in Melbourne against the Rams, not at home against Miami, not in a 36-30 track meet with Arizona.
Every other team in the league has given one up. No 49ers team in franchise history has opened a season this way.
Argument for Top 5 Offensive Line
The tape and the numbers never fully agreed. San Francisco allowed 27 sacks in 2025, and only four teams allowed fewer. That's not a broken line, it's a good one with a bad reputation.
This year, the group has stopped leaving room for debate. San Francisco has allowed just 20 pressures, the fewest in the NFL, and owns the league's top pass-blocking grade at PFF.
What separates a top-five line from a good pass-protecting one is that it does everything, and this group does. The run game ranks inside the top 10 by PFF's blocking grades, which keeps defenses honest and makes play-action lethal.
Against Arizona, the offense gained 437 yards on 50 snaps. That's 8.7 yards every time the ball was snapped. You don't do that without five guys moving people.
Purdy is the clearest beneficiary. He leads the league in passer rating at 133.1, with nine touchdowns and one interception.
The 49ers QB has talked openly about holding the ball too long last season, and he's picked his spots far better this year, but a quarterback can only play on time when the line gives him the time.
Kyle Shanahan keeps pointing to continuity, and it fits what you see. Stunts get passed off cleanly, and blitzers get picked up.
That kind of chemistry doesn't show up in free agency headlines, but it shows up on Sundays.
Counterargument is Opponents
The Rams, Dolphins, and Cardinals aren't the scariest pass rushes in football. Trent Williams was also forced out of the Arizona game, and how healthy the most important player on the line is matters greatly.
That's what makes the next two weeks so interesting. Denver arrives with a top-10 pass rush that already has eight sacks, and Seattle follows.
If San Francisco keeps Purdy upright through that stretch, there's nothing left to argue.
The fewest pressures in the league, the best pass protection grade, a productive run game, and a sack-free start that's never been done in franchise history. Call it what it is: a top-five offensive line.
