Missouri’s quarterback situation recently shifted because projected starter Sam Horn suffered a serious leg injury in the 2025 season opener, ending his year and forcing Mizzou to reshuffle the depth chart and pursue new options, including in the transfer portal. At the same time, earlier starter Beau Pribula chose to enter the transfer portal after an uneven 2025 season, which further opened the door for new quarterbacks like transfer Austin Simmons to arrive and compete for the job.

Quick Scoop

Missouri went from having an apparent long-term answer at quarterback to facing another reset after Horn’s injury and Pribula’s departure. The program is now trying to stabilize the position through transfers and competition heading into the 2026 season.

What happened to Sam Horn?

  • Horn suffered a leg fracture early in Missouri’s 2025 season opener against Central Arkansas and was ruled out for the rest of the season.
  • The injury not only ended his football year but also impacted his baseball prospects with the Los Angeles Dodgers, since he is a dual-sport athlete.

What happened to Beau Pribula?

  • Penn State transfer Beau Pribula took over the starting role after Horn’s injury and had a mixed first season, with Missouri finishing 104th nationally in passing yards.
  • A couple of weeks before the portal opened after the season, Pribula announced he would enter the transfer portal, leaving Mizzou without its primary 2025 starter.

Who is the new Mizzou quarterback?

  • Missouri landed transfer quarterback Austin Simmons, who is expected to be in line to start for the Tigers in 2026.
  • The staff is still actively evaluating and recruiting quarterbacks through the portal, emphasizing that finding the right quarterback is the top roster priority after an underwhelming offensive season.

Big-picture quarterback drama at Mizzou

  • Between Horn’s season-ending injury, Pribula’s decision to transfer, and a struggling passing attack, Mizzou’s QB spot has been in constant flux since late 2025.
  • The program’s response has been aggressive portal recruiting, staff changes (including the QB coach leaving for a Big 12 OC job), and bringing in new offensive minds to reboot the passing game.

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