Who is Starting QB for 49ers: Why Brock Purdy is Still the Man in San Francisco

Who is Starting QB for 49ers: Why Brock Purdy is Still the Man in San Francisco

If you’ve been following the chaos of the NFL lately, you know that keeping track of a depth chart is basically a full-time job. Injuries, trade rumors, and "next man up" mentalities turn rosters into a revolving door. But for the San Francisco 49ers, the question of who is starting qb for 49ers has a very clear, albeit battled-hardened, answer: Brock Purdy.

He isn't just the guy; he's the $265 million man.

Honestly, it’s been a wild ride for the former "Mr. Irrelevant." Just this past week, Purdy led the Niners into a hostile Lincoln Financial Field and walked away with a 23-19 Wild Card victory over the Eagles. It was a massive "revenge" game for him, considering his history of elbow issues in that stadium.

The Current Depth Chart

Right now, as the team prepares for a brutal Divisional Round matchup against the Seattle Seahawks, the hierarchy in the quarterback room is set in stone.

Brock Purdy is the undisputed QB1. He’s healthy—mostly—and playing some of the most efficient football of his career. Behind him, things get a bit more interesting. Mac Jones is currently the primary backup. You might remember Mac from his New England days or his stint in Jacksonville, but he’s found a niche in Kyle Shanahan's system. He actually started eight games earlier this season when Purdy was sidelined with a nasty turf toe injury.

Then there’s the deep bench. The Niners have Kurtis Rourke, a seventh-round rookie out of Indiana, but he’s been on the Non-Football Injury (NFI) list with an ACL tear from his college days. Adrian Martinez has also been in the mix, but for all intents and purposes, this is Purdy's team.

Why the "Who is Starting" Question Kept Popping Up

You’ve probably seen the headlines throughout the 2025-26 season. There was a point where people weren't sure if Purdy would even finish the year.

Football is violent. Purdy found that out the hard way during the season opener when he messed up his toe. He missed a couple of games, came back, looked a bit shaky against Jacksonville, and then sat out another six weeks. That’s when the "who is starting qb for 49ers" searches started spiking. Mac Jones stepped in and did a decent job, winning five of his eight starts. He kept the ship afloat, which is exactly what you want from a backup.

But when Purdy returned in Week 11 against Arizona, the vibe changed instantly. He went on a tear, throwing 16 touchdowns during a six-game winning streak.

The $265 Million Elephant in the Room

One reason there’s so much focus on the 49ers' signal-caller is the massive contract extension Purdy signed in May 2025. We’re talking five years and $265 million. That’s an average of $53 million a year. When you pay a guy that kind of money, he’s not just the starter; he’s the face of the franchise.

The pressure is immense. Critics love to say he’s a "system QB," but if you watch the tape from the Wild Card win against Philly, you see him making throws that Mac Jones simply can’t make. He’s got this weird ability to scramble for a first down right when you think the play is dead. Remember that 26-yard scramble against the Titans? That wasn't "the system." That was just Purdy being a playmaker.

Looking Ahead to Seattle

The Niners are headed to Seattle for the Divisional Round. It’s a tough spot. They lost to the Seahawks 13-3 in Week 18, which is actually why they had to play in the Wild Card round in the first place.

John Lynch and Kyle Shanahan have made it clear: as long as Purdy is walking, he's the starter. The team is dealing with some major injuries elsewhere—George Kittle is out with an Achilles issue, and Christian McCaffrey is carrying the load as usual—but the quarterback position is the one constant they can rely on right now.

What This Means for Fans and Bettors

If you’re looking at the 49ers' odds or just trying to set your fantasy lineup for the playoff rounds, here is the ground truth:

  • Purdy is the lock. Unless there’s a freak injury in practice, #13 is taking the first snap.
  • Mac Jones is the insurance policy. He’s proven he can win in this system, which gives the coaching staff a lot of breathing room.
  • The "System" is evolving. With Kittle out, Purdy is leaning more on guys like Jauan Jennings and Demarcus Robinson.

Basically, the Niners have survived a roller coaster of a season to get here. The quarterback drama that plagued them in years past—the Trey Lance era, the Jimmy G era—feels like a lifetime ago. Brock Purdy has solidified his spot, silenced most of the doubters, and is currently the guy tasked with bringing a Lombardi Trophy back to the Bay Area.

If you’re tracking the 49ers’ progress through the post-season, keep an eye on Purdy’s mobility. That turf toe was a lingering issue for months. In the Wild Card game, he looked fluid, but Seattle’s pass rush is a different beast entirely. If he stays clean in the pocket, the Niners have a genuine shot at the NFC Championship.

Next Steps for 49ers Fans:

  • Check the final Friday injury report before the Seattle game to ensure no late-week setbacks for Purdy’s toe.
  • Watch how Shanahan integrates Jake Tonges into the passing game now that Kittle is sidelined; this will change Purdy's check-down options significantly.
  • Monitor the weather forecast for Seattle; a slick field could be a major factor for a quarterback who relies on timing and anticipation.