Mac Jones is starting because his recent play in San Francisco showed he can efficiently run Kyle Shanahan’s offense and win games, especially while Brock Purdy has been sidelined or limited by injury.

Quick Scoop

  • When Purdy went down, Jones stepped in and put together a strong stretch, going 5–3 with 13 passing touchdowns and stabilizing the 49ers’ offense instead of just “managing” games.
  • His performance in key matchups, including pressure spots against playoff-level defenses like the Rams, helped convince the staff he can operate as a legitimate starter, not just a backup.
  • Shanahan and GM John Lynch have publicly backed him, emphasizing that Jones is under contract through 2026 and that they’re “not into getting rid of good players,” which signals real organizational confidence, not just a temporary patch.
  • Jones himself has been vocal that he “believes he’s a starter in this league,” and his revived form in San Francisco has fueled trade buzz and league-wide speculation that he has earned another shot to start, whether in San Francisco or elsewhere.

In forum discussions and fan chatter, the vibe has shifted from mocking his Patriots struggles to a mix of surprise and cautious optimism that he might actually have reset his career in a favorable system.

TL;DR: He’s starting because he finally put good film on tape again, the 49ers’ brain trust trusts him, and he’s playing like someone who wants—and deserves—a real shot at a starting job.

Information gathered from public forums or data available on the internet and portrayed here.