Baker Mayfield
Mayfield’s career revival came out of nowhere because nobody expected him to become an NFL starter again. His time in Cleveland promised much but his exit was acrimonious. Then he joined the Panthers but his time there was a disaster. The former Heisman Trophy winner joined the Rams as a short-term stopgap.
Finally, after Tom Brady retired, the Bucs signed Mayfield. He produced an unexpectedly productive start to his time in Florida. Many analysts expected Tampa Bay to fall into despair after Brady’s departure. However, Mayfield kept them treading water (via NBC Sports).