The San Francisco 49ers could be without starting quarterback Mac Jones this Sunday against the Tampa Bay Buccaneers, as his oblique injury continues to raise concern within the organization, according to @AdamSchefter.

While earlier reports indicated optimism about his availability, team sources now suggest the coaching staff will monitor Jones closely during pregame warmups before making a final decision. The injury — sustained during last week’s matchup — has affected his throwing motion and core stability, key components for accuracy and power.

If Jones is unable to play, backup Sam Darnold is expected to take over the starting duties. The 49ers have adjusted practice reps accordingly, preparing for both scenarios ahead of Sunday’s home game at Levi’s Stadium.

Speaking to reporters late Saturday, Mac Jones shared a glimpse of his mindset heading into the critical NFC showdown:

“I’m not the type to sit out unless I absolutely have to,” Jones said. “This team fights every down, every snap — and I want to be out there with them. But at the same time, I have to be smart. It’s about helping the team win, whether I’m on the field or on the sideline.”

Kickoff is scheduled for Sunday afternoon, with San Francisco’s quarterback situation likely to remain a game-time decision.